Complete Question 8 and 9 Transcribed Image Text: Merit (M3) 5. In a certain plant, red fruit, R, is dominant to green fruit, r. A heterozygous plant with red fruit

Complete Question 8 and 9 Transcribed Image Text: Merit (M3)
5. In a certain plant, red fruit, R, is dominant to green fruit, r. A heterozygous plant with red fruit is
crossed with a plant with red fruit.
a.
Determine the probable genotypic and phenotypic ratios resulting from this cross.
b. Determine the probable genotypic and phenotypic ratios expected from crossing two heterozygous
plants.
6. Assume that brown eyes are dominant to blue eyes. A father who is heterozygous brown eyed and a
heterozygous brown eyed mother have children.
a.
are genotypes and phenotypes of the offspring?
b.
is the probability of them having a blue eyed child?
7. Mum has type A blood. Dad has type AB blood. possible blood types could their children
inherit? (Show all possibilities).
8. Mum has type B blood. Dad has type O blood. They have a child with type 0 blood. Make a Punnett
square to show what Mom’s genotype must be to have a child with type O blood.
9. A wealthy elderly couple dies together in an accident. A man comes forward, claiming that he is their
long lost son and is entitled to their fortune. The couple were of blood types AB and O. The man has
type O blood. Could he be the heir to the fortune? Show why or why not.
10. Haemophilia is a sex linked disorder caused by a recessive allele carried on the X chromosome.
a. Draw a genetic diagram for a female carrier with a haemophiliac male, to predict the possible
genotypes of their offspring.
b. Explain why haemophilia is more common in males than females.
11. Colour blindness is a sex linked disorder caused by a recessive allele carried on the X
chromosome.
a. Draw a genetic diagram for a colour blind male with a carrier female, to predict the possible
genotypes of their offspring.
b. Explain why colour blindness is more common in females than haemophilia.