3.) .) Which of the following is NOT a part of Mendel’s Model(as described in class)?
A. If the alleles at a locus differ, the dominant allele determinesthe organism’s appearance.
B. For each trait, an individual inherits two copies of the gene,known as sister chromatids.
C. Two alleles separates during meiosis and end up in differentgametes.
D. Alleles account for variation in traits.
10.) A true breeding black flowered plant is mated with a truebreeding white flowered plant (P generation). Flower color in thisplant is controlled by a single gene. Their F1 offspring are allgray-flowered.
Two of these gray-flowered plants are mated together, and producean F2 generation of 100 offspring. 25 offspring are black, 50offspring are gray, and 25 offspring are white flowered.
Which of the following is the BEST statement regarding thisscenario?
A. The gene exhibits complete dominance, because the F1 offspringwere all gray flowered, and the F2 generation contained both blackand white flowers.
B. The gene is epistatic because alleles at multiple loci areinteracting to produce the gray phenotype.
C. The gene exhibits codominance, because both black and whiteflowers were present in the F2 generation and the phenotypic ratio= 3:1 in the F2 generation.
D. The gene exhibits incomplete dominance, because the phenotypicratio = 1:2:1 in the F2 generation.
42.) What is your conclusion regarding the hypothetical paternityof these two twins? Please state your conclusion in onesentence.
Note: there are several correct answers to this question!
41.) Fraternal (non-identical) twins develop when two eggs in awoman’s body are fertilized by different sperm gametes. In a courtcase over disputed paternity of two non-identical twins, the bloodtypes of their mother, the twins, and two potential fathers aretaken. You are assigned to this case to settle this dispute usingthe following blood type information.
The mother is blood type O
Twin A has blood type A and twin B has blood type B
Man #1 is blood type A
Man #2 is blood type B
Write the blood genotypes for both of the nonidentical twins below.Use the following format for your alleles:
IA = allele A
IB = allele B
i = allele O
Format your answer as:
Twin A: _____________. Twin B: _________________
