In cats yellow is due to gene B and black to its allele b.
These genes are located on the X chromosome (sex-linked).
The heterozygous results in calico (tortoise shell). What
kinds of offspring (sex & color) are expected from the
cross: black male & calico female? Most calico males are
sterile, why?
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A number of plant species have a recessive allele for albinism; homozygous albino (white) individuals are unable to synthesize chlorophyll. If a tobacco plant heterozygous for albinism is allowed to self-pollinate and 500 seeds germinate: a)how many offspring will be the same genotype as the parent? b)how many seedlings would you expect to be white?
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Promoters of housekeeping genes contain variable numbers of GC boxes, but neither TATA nor CCAAT boxes.Inwhat way these properties of housekeeping promoters are helpful?
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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?
What are the differences between Genetic Engineering and breeding?
what are Athletic genes?
Micro Biology 
