Genes that control coat color in mammals represent some of the best early examples of genes with multiple alleles exhibiting different phenotypes. A classic example is the C gene in hamsters. Three of the known alleles of this gene are C, c^a and c^k. Each supplies a different amount of black pigment to the coat hair. The phenotypes of three different homozygous strains are as follows.

would mate the true-breeding  c^a c^a  hamsters to the true-breeding c^k c^k  hamsters to produce heterozygous  c^a and c^k  F1 progeny. Crosses and their interpretation that would have allowed geneticists to come to the conclusion that c^a and c^k were likely to be alleles of the same using the concept that alleles of the same gene will be tightly linked. What will be the ratio of F2 hamster;

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#Question id: 12866

#General Aptitude

The area of the circumcircle of an equilateral triangle is 3π sq. cm. The perimeter of the triangle is

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#Question id: 11607

#Unit 6. System Physiology – Plant

How the active gibberellin GA1 is inactived by?

a)  By hydroxylation remove GA20 from the biosynthetic pathway by converting it to GA1

b) conversion to GA8 by a hydroxylation on carbon 2

c) By hydroxylation remove GA20 from the biosynthetic pathway by converting it to GA29

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#Question id: 1910

#Unit 4. Cell Communication and Cell Signaling

Hyperacute graft rejection is caused by:

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#Question id: 11696

#Unit 7. System Physiology – Animal

Which of the following is most likely to produce the greatest increase in insulin secretion?

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#Question id: 1935

#Unit 4. Cell Communication and Cell Signaling

Evidence for immune surveillance of tumors comes from a substantially increased incidence of certain cancers in patients with: