what are Stem Cells ?

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A single base exchange mutation occurs in the promoter of the TRP operon. How the operation of the HIS operon might be affected in two ways?

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sir/ma'm im doing my msc in biotechnology.im concern that can go for phd in genetics? and how?? plz help me in this..thank you

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A normally pigmented man (dominant) marries an albino woman (recessive). They have 3 children, one of whom is an albino. What is the genotype of the man?

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In cucumbers normal leaves (N) are dominant to curled leaves (n) and elongated fruit (L) is dominant to spherical fruit and these genes are linked on the same chromosome. If a pure-breeding normal-leaved, elongated fruit cucumber is crossed with a curled-leaved, spherical fruit cucumber, what will be the phenotype of the F1? the phenotypic ratio of the F2?

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what is Genetic Engineering?

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why a blind girl{blind from birth} child develops early puberty?

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What situations might be viewed as ethical uses of human cloning? Are you doubtful, fearful, or hopeful about human cloning?

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In human beings, brown eyes are usually dominant over blue eyes. Suppose a blue-eyed man marries a brown-eyed woman whose father was blue-eyed. What proportion of their children would you predict to have blue eyes?

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For each of the following, state whether it is a gamete or a genotype of an individual a) TT b) Tg c) IcCC d) TW

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Suppose you are heterozygous for a mutant beta-thalassemia allele. If the frequency of beta-thalassemia is 1/1600 persons, what is the probabilty that your prospective spouse is heterozygous for a mutant beta-thalassemia allele?

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Can DNA survive to intense heat?

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