Answer to Question #162696 in Genetics for Shivani Yadav

Question

Genetics

07 How many Barr bodies would be present in each of the

Following human conditions.

(a) Klinefelter Syndrome

(b) Turner Syndrome

(e) Down Syndrome

(d) XY Y

(e) XXX (1) XXXY

Q.8. Maize is a diploid organism with 10 pairs of chromosomes. How Many chromatids and chromosomes are present in the following stages of cell division.

(a) Metaphase I of meiosis

(b) Metaphase II of meiosis

(c) Metaphase of mitosis

Q.9 What would be the blood groups of children if their parents are of following genotypes for their blood groups:

(a) A A (father) and A° A° (mother) (b) AA° (father) and A A (mother)

(c) A A° (father) and AA (mother)

Q10 A woman of blood group O claimed a baby with blood group O as her

child, and filed a case in the court against a man with blood group A B whom she said was the father of the child. What evidence is provided by the genetics in this case?

Answer 1

7a)Klinefelter Syndrome- 2 barr bodies

b) Turner Syndrome - no barr bodies

c) Down Syndrome - 1 barr body

d) XY Y - 1 barr body

e) XXX (1) XXXY-2 barr bodies

8.(a) Metaphase I of meiosis-10 chromosomes ,20 chromarids

(b) Metaphase II of meiosis-10 chromosomes ,20 chromarids

c) Metaphase of mitosis-20 chromosomes, 40 chromatids.

9.(a) A A (father) and A° A° (mother),

Offsprings - AA°, AA°, AA°, AA°

b) (b) AA° (father) and A A (mother)

Offsprings - AA, AA, A°A, A°A

c) (c) A A° (father) and AA (mother)

Offsprings - AA, AA, A°A, A°A

10.A father who is blood type AB could pass either an A or a B allele to his son or daughter. This couple could have children of either blood type A (O from mother and A from father) or blood type B (O from mother and B from father).