Holt McDougal Ch 6 Meiosis & Mendel Genetics Biology Review Game Holt McDougal Ch 6 Meiosis & Mendel Genetics

Q 1 1. Who is considered the “Father of Genetics”?

A 1 1. Who is considered the “Father of Genetics”? Gregor Mendel

Q 2 2. Homologous chromosomes are pairs of chromosomes containing genes that code for ________. A) Different traits B) the same traits C) DNA D) Sex of the offspring

A 2 B) the same traits

Q3 3. A haploid cell has how many sets of chromosomes? A) one set B) 2 sets C) 3 sets D) 4 sets

A3 A) one set

Q 4 A _______________allele masks or hides the effects of a ___________ allele. A) recessive; dominant B) Dominant; Recessive C) Codominant; dominant

A 4 B) Dominant; Recessive

Q 5 5. What is the difference between a GENOTYPE versus a PHENOTYPE?

A 5 Genotype- the genetic alleles for a trait represented by letters. Phenotype- the physical appearance of a trait.

Q 6 6. Does an individual have to visually show the phenotype for a trait in order for that trait to show up in the offspring? Yes or No.

A 6 No, it could be recessive & hidden.

Q 7 7. What is the difference between a Homozygous individual and a Heterozygous individual?

A 7 HOMOZYGOUS – has 2 alleles that are the same (such as TT or tt) Heterozygous – has 2 different alleles (Tt)

Q 8 8. When you have complete dominance, in heterozygotes which trait is expressed? A) the dominant trait B) the recessive trait C) a blending of dominant & recessive

A 8 A) the dominant trait

Q 9 9. Is the allele for a dominant or a recessive trait usually represented by a CAPITAL letter?

A 9 DOMINANT trait (capital letter)

Q 10 10. Crossing over occurs during what phase of meiosis (be specific)

A 10 10. Crossing over occurs during what phase of meiosis (be specific) Prophase 1

Q 11 11) The process of meiosis involves how many divisions and results in how many daughter cells? A) one division & 2 daughter cells B) 2 divisions & 4 daughter cells C) 3 divisions & 3 daughter cells

A 11 B) 2 divisions & 4 daughter cells

Second #11 Yellow peas (Y) are dominant to green peas (y). Which of the following represents the genotype of a pea plant that is heterozygous for yellow. A) YY B) Yy C) yy d) gg E) YG

Answer Second # 11 B) Yy (capital Y and little y) = heterozygous

Q 12 12. Which law states that “alleles of a gene separate from each other during meiosis”. A) Law of Segregation B) Law of Independent Assortment C) Law of genotypes

A 12 12. Which law states that “alleles of a gene separate from each other during meiosis”. A) Law of Segregation

Q 13 13. True or False- “When crossing over occurs, chromosomes exchange corresponding segments of DNA”

A 13 TRUE

Q 14 14) Which of the following provides new genetic combinations? A) Crossing over B) Random fertilization C) Independent Assortment D) All of the above

A 14 14) Which of the following provides new genetic combinations? A) Crossing over B) Random fertilization C) Independent Assortment D) All of the above

Q 15 15.) During Cytokinesis in females the _______________divides unequally. A) Egg B) DNA C) Cytoplasm

A 15 15.) During Cytokinesis in females the _______________divides unequally. A) Egg B) DNA C) Cytoplasm

Q 16 16) What is produced during oogenesis in females? A) One ovum (egg) and 3 polar bodies B) 3 eggs & one polar body C) 2 eggs & 2 polar bodies D) 4 eggs

A 16 16) What is produced during oogenesis in females? A) One ovum (egg) and 3 polar bodies B) 3 eggs & one polar body C) 2 eggs & 2 polar bodies D) 4 eggs

Q 17 17.) Gametes are produced by what process? A) Mitosis B) Meiosis C) Crossing-Over D) Replication E) Tetrads

A 17 17.) Gametes are produced by what process? A) Mitosis B) Meiosis C) Crossing-Over D) Replication E) Tetrads

Q 18 18.) If an organisms diploid number is 20, what is it’s haploid number? A) 10 (1/2 of 20) B) 40 (2x20) C) 20 D) 23

A 18 18.) If an organisms diploid number is 20, what is it’s haploid number? A) 10 (1/2 of 20) B) 40 (2x20) C) 20 D) 23

Q 19 A person who is heterozygous for a recessive disorder is called what? ______________ Phenotypic B) a carrier C) codominant D) genotypic

A 19 A person who is heterozygous for a recessive disorder is called what? ______________ Phenotypic B) a carrier C) codominant D) genotypic

Q 20 20. Chromosomes form Tetrads during what process (be specific). A) Mitosis B) Prophase I of meiosis C) Prophase II of meiosis D) Interphase E) Metaphase I

A 20 20. Chromosomes form Tetrads during what process (be specific). A) Mitosis B) Prophase I of meiosis C) Prophase II of meiosis D) Interphase E) Metaphase I

Q 21 A __________________cross involves one pair of contrasting traits. dihybrid B) Monohybrid C) Homozygous D) Heterozygous

A 21 A __________________cross involves one pair of contrasting traits. dihybrid B) Monohybrid C) Homozygous D) Heterozygous .

Q 22 22) Mendel called the offspring of the P generation the _____________generation. A) F1 or First Filial B) F2 or Second Filial C) P (Parental) D) Second Parental

A 22 22) Mendel called the offspring of the P generation the _____________generation. A) F1 or First Filial B) F2 or Second Filial C) P (Parental) D) Second Parental

Q 23 23) Different forms of a particular gene are called ___________________. A) phenotypes B) Alleles C) Genotypes D)Codominance E) F-1

A 23 23) Different forms of a particular gene are called ___________________. A) phenotypes B) Alleles C) Genotypes D)Codominance E) F-1

Q 24 24. In heterozygous individuals, only the __________allelle is expressed. A) Recessive B) Dominant C) Codominant D) Monohybrid E) Sex-linked

A 24 24. In heterozygous individuals, only the __________allelle is expressed. A) Recessive B) Dominant C) Codominant D) Monohybrid E) Sex-linked

Q 25 25. An individual who has 2 identical alleles for a trait is said to be _______________. A) Heterozygous B) Genotype C) Phenotype D) Homozygous

A 25 25. An individual who has 2 identical alleles for a trait is said to be _______________. A) Heterozygous B) Genotype C) Phenotype D) Homozygous

Q 26 26. A situation in which 2 dominant alleles are expressed at the same time is called what? Codominance B) Dihybrid C) Heterozygous D) Homozygous

A 26 26. A situation in which 2 dominant alleles are expressed at the same time is called what? Codominance B) Dihybrid C) Heterozygous D) Homozygous

Question 27 27. At the end of meiosis _____________cells form. 2 identical B) 2 genetically different C) 4 identical D) 4 genetically different E) 3 identical

A 27 27. At the end of meiosis _____________cells form. 2 identical B) 2 genetically different C) 4 identical D) 4 genetically different E) 3 identical

Q 28 28. An individual’s _________________refers to the set of alleles it has inherited. A) Genotype B) Phenotype C) Carrier D) Monohybrid E) heterozygous

A 28 28. An individual’s _________________refers to the set of alleles it has inherited. A) Genotype B) Phenotype C) Carrier D) Monohybrid E) heterozygous .

Q 29 29. The external physical appearance of an individual determined by the alleles present is called what? A) Probability B) Genotype C) Phenotype D) Codominance E) Recessive

A 29 29. The external physical appearance of an individual determined by the alleles present is called what? A) Probability B) Genotype C) Phenotype D) Codominance E) Recessive

Q 30 30. The likelihood that a specific event will occur is called what? A) Dominance B) Codominance C) Probability E) Monohybrid

A- 30 30. The likelihood that a specific event will occur is called what? A) Dominance B) Codominance C) Probability E) Monohybrid

Q 31 31) The passing of traits from parents to offspring is called _______. A) Heredity B) Genetics C) Development

A 31 31) The passing of traits from parents to offspring is called _______. A) Heredity B) Genetics C) Development

Q 32 32) The scientific study of heredity is called ________. A) Genetics B) Development C) Traits D) meiosis

A 32 32) The scientific study of heredity is called ________. A) Genetics B) Development C) Traits D) meiosis

Q 33 33) Situations in which one allele is not completely dominant over another allele for the gene are called ____________ A) Multiple alleles B) Multiple Genes C) Polygenci Inheritance D) Incomplete Dominance

A 33 33) Situations in which one allele is not completely dominant over another allele for the gene are called ____________ A) Multiple alleles B) Multiple Genes C) Polygenci Inheritance D) Incomplete Dominance

Q 34 34) When you flip a coin, what is the probability that it will come up tails? A) 1 B) ½ C) ¼ D) 1/8 E) ¾

A 34 34) When you flip a coin, what is the probability that it will come up tails? A) 1 B) ½ C) ¼ D) 1/8 E) ¾

Q 35 35) A typical human body cell contains 46 chromosomes. How many chromosomes are found in a typical human ovum or egg cell? A) 46 B) 92 C) 45 D) 23 E) 12

A 35 35) A typical human body cell contains 46 chromosomes. How many chromosomes are found in a typical human ovum or egg cell? A) 46 B) 92 C) 45 D) 23 E) 12