Genetics Answers

Haemolytic jaundice is due to dominant gene but only 20% of the people develop this disease. A heterozygous man marries a homozygous normal woman. What proportion of the children in population would be expected to have this disorder and how?
(1) 1/5
(2) 1/20
(3) 1/10
(4) 1/2

In a random mating population frequency of disease causing recessive allele is 80%. What would be the frequency of carrier individual in population and how?
(1) 64%
(2) 32%
(3) 16%
(4) 100%

Albinism in human is controlled by a recessive gene 'a'. If both parents were known to carrier (Aa) for albinism. What is the chances of 1 normal and 3 albino in family of four and how?
(1) 12/256
(2) 81/256
(3) 108/256
(4) 54/256

What is the probability of three daughters to a couple in three children and how?
(1) 1/4
(2) 1/8
(3) 1/16
(4) 3/8

A test cross of F1 flies +a/+b produced the following offspring :
++/ab = 9
ab/ab = 9
+b/ab = 41
+a/ab = 41
What will be the distance between the linked genes and how?
(1) 82 cM
(2) 18 cM (cis)
(3) 20 cM
(4) 18 cM (trans)

A roan bull is bred to three cows. Cow A has the same genophyte as the roan bull. Cow B is red and cow C is white. What proportion of roan cows are expected in the offsprings of each group of cows?

Consider the following sequence on m-RNA: AUGGCAGUGCCA. Assuming that genetic code is overlap then how many number of codon may be present on this genetic code and how?