2.5.6 Genetic Inheritance Causes of Variation Evolution Follow-Me – iQuiz

Q. What term is used to describe an individual’s genetic make- up? Allele only expressed in the homozygous condition Chemicals; Radiation; Viruses; Carcinogens Fossils; Embryos; Anatomy; Genetics Does not code for a protein Different alleles or genes Genotype Genes on the same chromosome Genes located on sex (X or Y) chromosome Four Identical alleles or genes Mutation Neither allele masks the expression of the other Organisms best suited to environment have greater chance of breeding and survival Physical appearance; Expression of genotype; Result of genotype + environment Heterosomes; Sex chromosomes XY Two Testing people for the presence of a specific gene XX Allele that is always expressed Inheritable change within a population in response to change in the environment by natural selection over time Alternative form of a gene Mutation; Variation Darwin; Wallace

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Q. Explain the term recessive. Allele only expressed in the homozygous condition Chemicals; Radiation; Viruses; Carcinogens Fossils; Embryos; Anatomy; Genetics Does not code for a protein Different alleles or genes Genotype Genes on the same chromosome Genes located on sex (X or Y) chromosome Four Identical alleles or genes Mutation Neither allele masks the expression of the other Organisms best suited to environment have greater chance of breeding and survival Physical appearance; Expression of genotype; Result of genotype + environment Heterosomes; Sex chromosomes XY Two Testing people for the presence of a specific gene XX Allele that is always expressed Inheritable change within a population in response to change in the environment by natural selection over time Alternative form of a gene Mutation; Variation Darwin; Wallace

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Q. What is an allele? Allele only expressed in the homozygous condition Chemicals; Radiation; Viruses; Carcinogens Fossils; Embryos; Anatomy; Genetics Does not code for a protein Different alleles or genes Genotype Genes on the same chromosome Genes located on sex (X or Y) chromosome Four Identical alleles or genes Mutation Neither allele masks the expression of the other Organisms best suited to environment have greater chance of breeding and survival Physical appearance; Expression of genotype; Result of genotype + environment Heterosomes; Sex chromosomes XY Two Testing people for the presence of a specific gene XX Allele that is always expressed Inheritable change within a population in response to change in the environment by natural selection over time Alternative form of a gene Mutation; Variation Darwin; Wallace

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Q. Explain homozygous Allele only expressed in the homozygous condition Chemicals; Radiation; Viruses; Carcinogens Fossils; Embryos; Anatomy; Genetics Does not code for a protein Different alleles or genes Genotype Genes on the same chromosome Genes located on sex (X or Y) chromosome Four Identical alleles or genes Mutation Neither allele masks the expression of the other Organisms best suited to environment have greater chance of breeding and survival Physical appearance; Expression of genotype; Result of genotype + environment Heterosomes; Sex chromosomes XY Two Testing people for the presence of a specific gene XX Allele that is always expressed Inheritable change within a population in response to change in the environment by natural selection over time Alternative form of a gene Mutation; Variation Darwin; Wallace

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Q. What is meant by phenotype? Allele only expressed in the homozygous condition Chemicals; Radiation; Viruses; Carcinogens Fossils; Embryos; Anatomy; Genetics Does not code for a protein Different alleles or genes Genotype Genes on the same chromosome Genes located on sex (X or Y) chromosome Four Identical alleles or genes Mutation Neither allele masks the expression of the other Organisms best suited to environment have greater chance of breeding and survival Physical appearance; Expression of genotype; Result of genotype + environment Heterosomes; Sex chromosomes XY Two Testing people for the presence of a specific gene XX Allele that is always expressed Inheritable change within a population in response to change in the environment by natural selection over time Alternative form of a gene Mutation; Variation Darwin; Wallace

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Q. Explain the term dominant. Allele only expressed in the homozygous condition Chemicals; Radiation; Viruses; Carcinogens Fossils; Embryos; Anatomy; Genetics Does not code for a protein Different alleles or genes Genotype Genes on the same chromosome Genes located on sex (X or Y) chromosome Four Identical alleles or genes Mutation Neither allele masks the expression of the other Organisms best suited to environment have greater chance of breeding and survival Physical appearance; Expression of genotype; Result of genotype + environment Heterosomes; Sex chromosomes XY Two Testing people for the presence of a specific gene XX Allele that is always expressed Inheritable change within a population in response to change in the environment by natural selection over time Alternative form of a gene Mutation; Variation Darwin; Wallace

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Q. Explain heterozygous. Allele only expressed in the homozygous condition Chemicals; Radiation; Viruses; Carcinogens Fossils; Embryos; Anatomy; Genetics Does not code for a protein Different alleles or genes Genotype Genes on the same chromosome Genes located on sex (X or Y) chromosome Four Identical alleles or genes Mutation Neither allele masks the expression of the other Organisms best suited to environment have greater chance of breeding and survival Physical appearance; Expression of genotype; Result of genotype + environment Heterosomes; Sex chromosomes XY Two Testing people for the presence of a specific gene XX Allele that is always expressed Inheritable change within a population in response to change in the environment by natural selection over time Alternative form of a gene Mutation; Variation Darwin; Wallace

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Q. What is ‘junk’ DNA? Allele only expressed in the homozygous condition Chemicals; Radiation; Viruses; Carcinogens Fossils; Embryos; Anatomy; Genetics Does not code for a protein Different alleles or genes Genotype Genes on the same chromosome Genes located on sex (X or Y) chromosome Four Identical alleles or genes Mutation Neither allele masks the expression of the other Organisms best suited to environment have greater chance of breeding and survival Physical appearance; Expression of genotype; Result of genotype + environment Heterosomes; Sex chromosomes XY Two Testing people for the presence of a specific gene XX Allele that is always expressed Inheritable change within a population in response to change in the environment by natural selection over time Alternative form of a gene Mutation; Variation Darwin; Wallace

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Q. What is linkage? Allele only expressed in the homozygous condition Chemicals; Radiation; Viruses; Carcinogens Fossils; Embryos; Anatomy; Genetics Does not code for a protein Different alleles or genes Genotype Genes on the same chromosome Genes located on sex (X or Y) chromosome Four Identical alleles or genes Mutation Neither allele masks the expression of the other Organisms best suited to environment have greater chance of breeding and survival Physical appearance; Expression of genotype; Result of genotype + environment Heterosomes; Sex chromosomes XY Two Testing people for the presence of a specific gene XX Allele that is always expressed Inheritable change within a population in response to change in the environment by natural selection over time Alternative form of a gene Mutation; Variation Darwin; Wallace

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Q. Human males and females differ in one of their twenty three pairs of chromosomes. What name is given to this pair of chromosomes? Allele only expressed in the homozygous condition Chemicals; Radiation; Viruses; Carcinogens Fossils; Embryos; Anatomy; Genetics Does not code for a protein Different alleles or genes Genotype Genes on the same chromosome Genes located on sex (X or Y) chromosome Four Identical alleles or genes Mutation Neither allele masks the expression of the other Organisms best suited to environment have greater chance of breeding and survival Physical appearance; Expression of genotype; Result of genotype + environment Heterosomes; Sex chromosomes XY Two Testing people for the presence of a specific gene XX Allele that is always expressed Inheritable change within a population in response to change in the environment by natural selection over time Alternative form of a gene Mutation; Variation Darwin; Wallace

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Q. What is sex-linkage? Allele only expressed in the homozygous condition Chemicals; Radiation; Viruses; Carcinogens Fossils; Embryos; Anatomy; Genetics Does not code for a protein Different alleles or genes Genotype Genes on the same chromosome Genes located on sex (X or Y) chromosome Four Identical alleles or genes Mutation Neither allele masks the expression of the other Organisms best suited to environment have greater chance of breeding and survival Physical appearance; Expression of genotype; Result of genotype + environment Heterosomes; Sex chromosomes XY Two Testing people for the presence of a specific gene XX Allele that is always expressed Inheritable change within a population in response to change in the environment by natural selection over time Alternative form of a gene Mutation; Variation Darwin; Wallace

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Q. How many possible gametes can a parent of genotype Aa produce? Allele only expressed in the homozygous condition Chemicals; Radiation; Viruses; Carcinogens Fossils; Embryos; Anatomy; Genetics Does not code for a protein Different alleles or genes Genotype Genes on the same chromosome Genes located on sex (X or Y) chromosome Four Identical alleles or genes Mutation Neither allele masks the expression of the other Organisms best suited to environment have greater chance of breeding and survival Physical appearance; Expression of genotype; Result of genotype + environment Heterosomes; Sex chromosomes XY Two Testing people for the presence of a specific gene XX Allele that is always expressed Inheritable change within a population in response to change in the environment by natural selection over time Alternative form of a gene Mutation; Variation Darwin; Wallace

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Q. Name the sex chromosomes that are present in a human male cell. Allele only expressed in the homozygous condition Chemicals; Radiation; Viruses; Carcinogens Fossils; Embryos; Anatomy; Genetics Does not code for a protein Different alleles or genes Genotype Genes on the same chromosome Genes located on sex (X or Y) chromosome Four Identical alleles or genes Mutation Neither allele masks the expression of the other Organisms best suited to environment have greater chance of breeding and survival Physical appearance; Expression of genotype; Result of genotype + environment Heterosomes; Sex chromosomes XY Two Testing people for the presence of a specific gene XX Allele that is always expressed Inheritable change within a population in response to change in the environment by natural selection over time Alternative form of a gene Mutation; Variation Darwin; Wallace

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Q. What is incomplete dominance? Allele only expressed in the homozygous condition Chemicals; Radiation; Viruses; Carcinogens Fossils; Embryos; Anatomy; Genetics Does not code for a protein Different alleles or genes Genotype Genes on the same chromosome Genes located on sex (X or Y) chromosome Four Identical alleles or genes Mutation Neither allele masks the expression of the other Organisms best suited to environment have greater chance of breeding and survival Physical appearance; Expression of genotype; Result of genotype + environment Heterosomes; Sex chromosomes XY Two Testing people for the presence of a specific gene XX Allele that is always expressed Inheritable change within a population in response to change in the environment by natural selection over time Alternative form of a gene Mutation; Variation Darwin; Wallace

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Q. Name the sex chromosomes that are present in a human female cell. Allele only expressed in the homozygous condition Chemicals; Radiation; Viruses; Carcinogens Fossils; Embryos; Anatomy; Genetics Does not code for a protein Different alleles or genes Genotype Genes on the same chromosome Genes located on sex (X or Y) chromosome Four Identical alleles or genes Mutation Neither allele masks the expression of the other Organisms best suited to environment have greater chance of breeding and survival Physical appearance; Expression of genotype; Result of genotype + environment Heterosomes; Sex chromosomes XY Two Testing people for the presence of a specific gene XX Allele that is always expressed Inheritable change within a population in response to change in the environment by natural selection over time Alternative form of a gene Mutation; Variation Darwin; Wallace

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Q. A spontaneous change in the genetic material of an organism is called a... Allele only expressed in the homozygous condition Chemicals; Radiation; Viruses; Carcinogens Fossils; Embryos; Anatomy; Genetics Does not code for a protein Different alleles or genes Genotype Genes on the same chromosome Genes located on sex (X or Y) chromosome Four Identical alleles or genes Mutation Neither allele masks the expression of the other Organisms best suited to environment have greater chance of breeding and survival Physical appearance; Expression of genotype; Result of genotype + environment Heterosomes; Sex chromosomes XY Two Testing people for the presence of a specific gene XX Allele that is always expressed Inheritable change within a population in response to change in the environment by natural selection over time Alternative form of a gene Mutation; Variation Darwin; Wallace

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Q. A change in the structure of DNA is a … and may give rise to a … Allele only expressed in the homozygous condition Chemicals; Radiation; Viruses; Carcinogens Fossils; Embryos; Anatomy; Genetics Does not code for a protein Different alleles or genes Genotype Genes on the same chromosome Genes located on sex (X or Y) chromosome Four Identical alleles or genes Mutation Neither allele masks the expression of the other Organisms best suited to environment have greater chance of breeding and survival Physical appearance; Expression of genotype; Result of genotype + environment Heterosomes; Sex chromosomes XY Two Testing people for the presence of a specific gene XX Allele that is always expressed Inheritable change within a population in response to change in the environment by natural selection over time Alternative form of a gene Mutation; Variation Darwin; Wallace

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Q. Name a scientist responsible for the Theory of Natural Selection Allele only expressed in the homozygous condition Chemicals; Radiation; Viruses; Carcinogens Fossils; Embryos; Anatomy; Genetics Does not code for a protein Different alleles or genes Genotype Genes on the same chromosome Genes located on sex (X or Y) chromosome Four Identical alleles or genes Mutation Neither allele masks the expression of the other Organisms best suited to environment have greater chance of breeding and survival Physical appearance; Expression of genotype; Result of genotype + environment Heterosomes; Sex chromosomes XY Two Testing people for the presence of a specific gene XX Allele that is always expressed Inheritable change within a population in response to change in the environment by natural selection over time Alternative form of a gene Mutation; Variation Darwin; Wallace

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Q. State two types of evidence used to support the theory of evolution. Allele only expressed in the homozygous condition Chemicals; Radiation; Viruses; Carcinogens Fossils; Embryos; Anatomy; Genetics Does not code for a protein Different alleles or genes Genotype Genes on the same chromosome Genes located on sex (X or Y) chromosome Four Identical alleles or genes Mutation Neither allele masks the expression of the other Organisms best suited to environment have greater chance of breeding and survival Physical appearance; Expression of genotype; Result of genotype + environment Heterosomes; Sex chromosomes XY Two Testing people for the presence of a specific gene XX Allele that is always expressed Inheritable change within a population in response to change in the environment by natural selection over time Alternative form of a gene Mutation; Variation Darwin; Wallace

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Q. How many possible gametes can a parent of genotype AaBb produce? Allele only expressed in the homozygous condition Chemicals; Radiation; Viruses; Carcinogens Fossils; Embryos; Anatomy; Genetics Does not code for a protein Different alleles or genes Genotype Genes on the same chromosome Genes located on sex (X or Y) chromosome Four Identical alleles or genes Mutation Neither allele masks the expression of the other Organisms best suited to environment have greater chance of breeding and survival Physical appearance; Expression of genotype; Result of genotype + environment Heterosomes; Sex chromosomes XY Two Testing people for the presence of a specific gene XX Allele that is always expressed Inheritable change within a population in response to change in the environment by natural selection over time Alternative form of a gene Mutation; Variation Darwin; Wallace

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Q. Give two causes of mutation. Allele only expressed in the homozygous condition Chemicals; Radiation; Viruses; Carcinogens Fossils; Embryos; Anatomy; Genetics Does not code for a protein Different alleles or genes Genotype Genes on the same chromosome Genes located on sex (X or Y) chromosome Four Identical alleles or genes Mutation Neither allele masks the expression of the other Organisms best suited to environment have greater chance of breeding and survival Physical appearance; Expression of genotype; Result of genotype + environment Heterosomes; Sex chromosomes XY Two Testing people for the presence of a specific gene XX Allele that is always expressed Inheritable change within a population in response to change in the environment by natural selection over time Alternative form of a gene Mutation; Variation Darwin; Wallace

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Q. What is meant by the term evolution? Allele only expressed in the homozygous condition Chemicals; Radiation; Viruses; Carcinogens Fossils; Embryos; Anatomy; Genetics Does not code for a protein Different alleles or genes Genotype Genes on the same chromosome Genes located on sex (X or Y) chromosome Four Identical alleles or genes Mutation Neither allele masks the expression of the other Organisms best suited to environment have greater chance of breeding and survival Physical appearance; Expression of genotype; Result of genotype + environment Heterosomes; Sex chromosomes XY Two Testing people for the presence of a specific gene XX Allele that is always expressed Inheritable change within a population in response to change in the environment by natural selection over time Alternative form of a gene Mutation; Variation Darwin; Wallace

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Q. What is Natural Selection? Allele only expressed in the homozygous condition Chemicals; Radiation; Viruses; Carcinogens Fossils; Embryos; Anatomy; Genetics Does not code for a protein Different alleles or genes Genotype Genes on the same chromosome Genes located on sex (X or Y) chromosome Four Identical alleles or genes Mutation Neither allele masks the expression of the other Organisms best suited to environment have greater chance of breeding and survival Physical appearance; Expression of genotype; Result of genotype + environment Heterosomes; Sex chromosomes XY Two Testing people for the presence of a specific gene XX Allele that is always expressed Inheritable change within a population in response to change in the environment by natural selection over time Alternative form of a gene Mutation; Variation Darwin; Wallace

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Q. What is meant by genetic screening? Allele only expressed in the homozygous condition Chemicals; Radiation; Viruses; Carcinogens Fossils; Embryos; Anatomy; Genetics Does not code for a protein Different alleles or genes Genotype Genes on the same chromosome Genes located on sex (X or Y) chromosome Four Identical alleles or genes Mutation Neither allele masks the expression of the other Organisms best suited to environment have greater chance of breeding and survival Physical appearance; Expression of genotype; Result of genotype + environment Heterosomes; Sex chromosomes XY Two Testing people for the presence of a specific gene XX Allele that is always expressed Inheritable change within a population in response to change in the environment by natural selection over time Alternative form of a gene Mutation; Variation Darwin; Wallace

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