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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In sesame, the one-pod condition (P) is dominant to the three-pod condition (p), and normal leaf (L) is dominant over wrinkled leaf (l). The two characters are inherited independently. Determine the genotypes and phenotypes of the two plants which produce the following progeny: 318 one- pod normal, 98 one-pod wrinkled, 323 three-pod normal and 104 three-pod wrinkled.

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Explain in terms of gene product function how a mutant allele can be dominant? recessive?

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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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Is Genetic engineering the best of solution?

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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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What is genetic genealogy?

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what is Avian flu threat? what are its symptoms?

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In pea plants, tall plants are dominant to short plants. If two heterozygous tall plants are crossed, what percent of the offspring will probably be short?

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what is pharmacogenomics?

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what is a Genetic Disorder ?

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What ethical dilemmas should be considered when genetic engineering is put into practice?

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