Sardar Krushinagar Dantiwada Agricultural Uiversity 2010 Bachelor of Veterinary Science & Animal-Husbandary Semester End Practical -university question paper

Fourth Annual Board Practical exam
AGB – 211(2+1)
Marks: 25_

Q. 1. In cattle polled condition (P) is dominant over horned (p) condition. A carrier
polled cow is mated to a horned bull. (4.0)

(a) What will be the appearance of offspring?

(b) What is the probability to get polled male calf?

Q. 2. In fowl the shape of comb is governed by pairs of genes in such a way that, fowl
having rrpp genotype will show single comb, R-P- genotype will show walnut
comb, rrP- genotype will show pea comb and R-pp genotype will show rose
comb. (4.0)

i) What will be genotype of parents in subsequent crosses?

(ii) Walnut X Rose produces three Walnut: three Rose: one Pea: one Single kind of offspring

(iii) Walnut X Rose produces all offspring have walnut comb.

Q. 3. Under the assumption of complete dominance for all the gene pairs, ans the
subsequent ques. for cross ranging from AA bb Cc X Aa Bb Cc (3.0)

i) Number of various kinds of gamates produced by every parent.

ii) Number of genotypic and phenotypic classes in progenies.

iii) Proportion of progenies representing all dominant traits.

Q. 5. Descibe in brief about various stages of meiosis prophage I. (2.0)

Q. 6. A. Practical record. (3.0)

B. Viva

Earning:   Approval pending.