Reference no: EM132561789
1. In the rabbits, black fur (B) is dominant to white fur (b). Perform the following crosses. For each of the following crosses. For each cross, give the phenotype & genotype of all offspring.
A. BB X bb
B. Bb x Bb
C. BB x Bb
2. In pea plants, yellow seed color is dominant to green seed color. If a heterozygous pea plant is crossed with a plant that is homozygous recessive for seed color, what is the probability that the offspring will have green seed?
3.If all the offspring of a particular cross has the genotype Gg, what must the genotype of the parents be?
4.In certain cats, tail lengths is determined by a gene that demonstrates in complete dominance. The allele that causes a long tail (T) is not completely dominant over the allele that causes no tail (t). If a cat is heterozygous for this trait (Tt), then the cat will have a short tail. What is the probability that the offspring will be manx cats (no tail) if a short - tailed cat is bred with a manx cat (no tail)?
5.Incomplete dominance is seen in snapdragons. The allele that causes red flowers (F) is not completely dominant over the allele that ca uses white flowers (f) . When a plant is heterozygous for the trait of the color (Ff) pink flowers result. Cross two pink snap dragons and provide genotype & phenotype of all offspring.
6.In humans, blood types A and B are equally dominant (co-dominant) Both types are dominant to type O. A man with type ab blood marries a woman with type O blood. Give the genotype & phenotype of all possible offspring.
7.If a man with blood type A, one of whose parents had blood type O marries a woman with blood type O, what percentage of their offspring would have blood type OO.
8.Hemophilia is a disease caused by a gene found on the X chromosome. There fore it is refereed to as a sex-linked disease. The recessive allele causes the disease. A normal man marries a woman that is heterozygous for the trait. Give the genotype & phenotype of all possible offspring.
9.Red - Green color blindness is a sex - linked recessive trait . Suppose a man with the disease marries a normal woman, Will any of their children have the disease?