4/12/18 quiz

In tigers, the allele for orange fur is dominant to the allele for white fur. If two heterozygous tigers mate and produce offspring, what is the probability of an individual offspring having white fur?

1/4

Cattle normally have two separate toes on each foot. In a condition called mule-foot, a recessive allele causes the toes to fuse, resembling the foot of the mule. Two cattle, each with normal, separate toes, have a calf with mule-foot. What is the probability that the next calf born to these parent cattle will also have a mule-foot?

25%

In a squash plants, the allele for yellow fruit (Y) is dominant to the allele for green fruit (y). A plant with genotype YY is crossed with a plant with genotype Yy. What are the expected genotype percentages in the offspring of this cross?

50% homozygous dominant and 50% heterozygous.

Suppose a trait is controlled by a gene that has one dominant allele (G) and one recessive allele (g). Which of the following crosses would be expected to produce the greatest variety of genotype among the offsprings?

Gg x gg