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Published byLester Wade Modified over 9 years ago
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Who is the Father of Genetics?
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Mendel
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a type of gene that is hidden by a dominant gene
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Recessive
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used to show the possible gene combinations in a cross between two organisms
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Punnett Square
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Punnet Squares What tools can we use to predict each generation? Simplest tool is a Punnet Square Aa A a
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Aa A a AA Aa aa Parents
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a gene responsible for determining traits in an organism
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Allele
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chromosomes that do not determine the sex of a person
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Autosome
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HH
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Homozygous Dominant
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pattern where the phenotypes of both homozygous parents are present in heterozygous offspring; both alleles are equally expressed
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Codominant Alleles
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the stronger trait in a gene pair
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Dominant
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union of a sperm and egg
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Fertilization
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the branch of biology that studies heredity and variation in organisms
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Genetics
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an organism's genetic makeup, or allele combinations
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Genotype
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an organism that has two different alleles for a single trait, for example (Hh)
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Heterozygous
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two of the same alleles for a trait, for example (HH)
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Homozygous
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an organism that is heterozygous for a particular trait
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Hybrid
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a genetic pattern in which neither of the two forms of a trait completely masks the other
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Incomplete Dominance
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any chromosome other than a sex chromosome
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Autosome
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a picture of all the chromosomes in a cell arranged in pairs
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Karyotype
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having more than two alleles that control a trait
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Multiple Alleles
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a chart or "family tree" that tracks which members of a family have a particular trait
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Pedigree
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what an organism looks like as a consequence of its genotype
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Phenotype
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transfer of pollen from the anther to the stigma of a plant
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Pollination
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hh
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Homozygous Recessive
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occurs when groups of gene pairs act together to produce a specific trait
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Polygenic Inheritance
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a trait that will be masked by more dominant trait
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Recessive
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a trait that will be masked by more dominant trait
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What part of the flower does the pollen land on?
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Fig. 10.01 Anther Stigma Fig. 10.01 Anther Stigma
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What is the function of the Anther?
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To make pollen
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Black (BB) Crossed with Brown (bb)
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Fig. 10. 06 Gametes All Bb All offspring are black and heterozygous (a) (b) If heterozygous Black (Bb) Homozygous Brown (bb) If homozygous Black (BB) Homozygous Brown (bb)
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X and Y chromosomes that determine the sex of an individual
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Sex Chromosome
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What are the female Sex Chromosomes
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XX
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What are the male Sex Chromosomes
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XY
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characteristics that are inherited, such as your eye color
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Traits
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heterozygous offspring show a phenotype that is in between the phenotypes of the two homozygous parents
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Incomplete Dominance
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Hh
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Heterozygous (Also called)
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Hybrid
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Punnett Square
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b B B b
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b B B b Bb
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How many traits are in a di-hybrid cross
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two
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cross a red (RR) and a white (WW) flower
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W R R W
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W R R W RW
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What type of cross Created pink flowers?
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Incomplete Dominance
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Cross two pink flowers
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R R W W RRRW WW
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What is the Phenotype ratio?
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1 red:2pink:1white
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Cross to checked chickens (BW)
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B B W W BBBW WW
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What is the Genotype ratio?
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1BB:2BW:1WW
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What type of cross produces checkered chickens
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Co-Dominance
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Blood type is What type of inheritance ?
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Multiple Alleles
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How many Alleles are there for blood type?
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There are 3 A, B, and O
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What blood types are possible
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A, B, AB and O
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What blood type is recessive
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Type O
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Cross type O With type AB
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B AO BO
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Probability is The chance that an event will occur
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