13) What is different between two alleles of the same gene? A) Their location. F

Question

13) What is different between two alleles of the same gene? A) Their location. For example, one allele might be at the end of one chromosome, while the other allele is in the middle of another chromosome. B) The chromosome number they are on. For example, one allele might be on chromosome 12, while the other one is on chromosome 3. C) The information they carry. For example, one allele might carry the information for blue eye pigment, while the other carries the information for brown eye pigment. D) The cell they are in. For example, one might be in a liver cell, while the other is in a blood cell. 14) When I say a flower is purple," what have I described? A) Its phenotype B) Its haplotype C) Its karyotype D) Its genotype 15) A homozygous milk chocolate Easter bunny is crossed with a homozygous dark chocolate Easter bunny dark chocolate is dominant over milk chocolate and the traits segregate according to Mendelian genetics, which traits will the offspring express? A)3dark to lmilk ?) 3 milk to i dark C) All milk D) All dark 16) A test cross is performed to determine if a specific individual is a carrier. The results generate a 5050 ratio of phenotypes. The test subject is therefore A) heterozygous B) bomozygous dominant C) homozygous recessive D) hetcrozygous dominant 17) Assuming complete dominance, what is the expected ratio of genotypes of the offspring following the cross of two heterozygotes? A) 4:1 C) 3:1 18) Assuming complete dominance, what cross of two heterozygotes? A) 4:1 is the expected ratio of phenotypes of the offspring following the C) 3:1 19) Define Mendel's law of independent assortment. A) The inheritance of one character has no effect on the inheritance of another character B) Segregation of homologous chromosomes is random. C) The expression of one gene has no effect on the expression of another D) There are two versions of each trait, a dominant and a recessive; the one gene. you get is random. 20) The following F1 cross is made: BBGg x Bbgg. Which is not a possible outcome in the F2 generation? A) BbGg B) BbGG C) BBgg D) BBGg 21) Assuming codominance, if a homozygous red-flowered plant is crossed with a homozygous white-flowered plant, what will be the color of the offspring? A) Red B) White C) Pink D) Red and white Assuming incomplete dominance, if a homozygous red-flowered plant is crossed with a flowered plant, what will be the color of the offspring? C) Pink D) Red and white 23) Which of the following processes gencrates a continuum (spectrum) of v A) Pleiotropy varying phenotypes? C) Epistasis D) Single-gene traits

Explanation / Answer

13. C. Two alleles of a same gene can differ by the information they carry.

14. A. Purple denotes phenotype of a flower. Phenotypes are observable characteristics of allele.

15.D. The dark chocolate easeter bunny is denoted by allele D and milk chocolate by allele d, when DD × dd the F1 produces heterozygous dark chocolate Dd. Hence the offsprings are all dark.

16. A. heterozygous.

17. D. 1:2:1

18. C. 1:2:1

19. A. The inheritance of one character is independent of the inheritance of another.

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