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Posted Date: 30 Jul 2011 Posted By:: Dr. Ashish C Patel Member Level: Gold Points: 5 (₹ 1)
2011 Sardar Krushinagar Dantiwada Agricultural Uiversity Health and Wellness Bachelor of Veterinary Science & Animal Husbandry Semester End Practical Examination Question Paper University Question paper
Semester End Internal Practical Exam
PRINCIPLES OF GENETICS AND POPULATION GENETICS
(AGB-121: 2+1=3)Marks: 20.00
Q. 1. Write chromosome numbers found in somatic cells of Sheep, Goat, Mule, Pea plant
and Cat. (1.5)
Q. 2. A brown eyed man whose mother was blue eyed marries a brown eyed woman
whose father was blue eyed. Write the probabilities of followings:
a) First child is female and blue eyed.
b) First two children are male and brown eyed. (2.0)
Q. 3. In minks, the gene (p) and (i) when homozygous produce platinum coat colour.
Atleast one dominant gene of these gene pairs is necessary to produce the
common brown colour. Write genotypes and phenotypes of offsprings from a
cross between two brown minks heterozygous for both the gene pairs. (2.0)
Q. 4. Under assumption of complete dominance for all gene pairs, answer the questions
for Aa bb CC Dd Ee Ff x Aa BB cc Dd Ee FF cross.
a) No. of different types of gametes produced by each parent.
b) Proportion of progenies expressing all dominant traits.
c) Proportion of progenies heterozygous at both alleles? (3.0)
Q. 5. A cross of AB x ab gave following phenotypic segregation in F2 generation.
AB: 950 Ab: 245 aB: 258 ab: 147
Test, whether two gene pairs in above example are assorting independently or not?
If, not, find out the cause for the same. (4.0)
Q. 6. Suppose a father and mother claim that they have been given the wrong baby at
the hospital. Both parents are of group A, the baby they have been given is of
group O. From the above information, can we decide the parentage of child? If not
what is your suggestion? (2.0)
Q. 7. Practical Record (1.5)
Q. 8. Viva voce (4.0)
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