An erect eared barker is crossed with a droop eared, silent trailer. Litter after litter produces pups all with erect ears, but some are barkers and some are silent. What are the probable genotypes of the parents? Perform a cross to check your assumptions.

Rabbit fur is determined by multiple alleles. Solid color is controlled by the Ic allele, the chinchilla by the Ich allele, the Himalayan by Ih and the albino by i. The dominance hierarchy of these alleles is Ic> Ich> Ih> i. Write the gametes that a HIMALAYAN rabbit would form [x1]

An allelic series determines coat color in rabbits: C (full color), cch (chinchilla, gray color), c* (Himalayan, white with black extremities), and c (albino, all white). The C allele is dominant over all others, cch is dominant over c and c, ch is dominant over c, and c is recessive to all other alleles. This dominance hierarchy can be summarized as C> cch > c^ > c. The rabbits in the table are crossed and produce the progeny shown. Cross Parents Offspring А full color x albino 50% full color, 50% albino В Himalayan x albino 50% Himalayan, 50% albino C full color x albino 50% full color, 50% chinchilla D full color × Himalayan 50% full color, 25% Himalayan, 25% albino E full color x full color 75% full color, 25% albino Match the parental genotypes to the letter corresponding to the appropriate cross listed in the table. A В C D E Answer Bank Ccch x cc Cc x cc СС х сс hch x cc Сс х сс Сс х Сс chc x cc

Please read the scenario below, and then answer the question (in bold) that follows. In cats, the allele (B) produces a black coat color and the allele (b) produces a yellow coat color. These alleles are incompletely dominant to each other. A heterozygote produces a tortoise shell coat color. The alleles (B) and (b) are also sex-linked (i.e., they are carried on the X chromosome), and cats possess an XX-XY sex determination system, like humans. If a female cat with a tortoise shell coat mated with a male cat who had a yellow coat... What percentage of their offspring will have tortoise shell coats?   a. 0%   b. 25%   c. 50%   d. 75%   e. 100%