Biology, asked by pritidas645gmailcom, 1 year ago

discuss about lethal genes​

Answers

Answered by vrinda2882
1

Lethal alleles (also referred to as lethal genes or lethals) are alleles that cause the death of the organism that carries them. They are usually a result of mutations in genes that are essential to growth or development. Lethal alleles may be recessive, dominant, or conditional depending on the gene or genes involved.


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Answered by RaGhAv200407
0
LETHAL GENES

It has been observed that all genes or genetic factors are not useful to the organism. There are some genetic factors or genes, when present in any organism cause its death during early stage of development. They may even cause death of the individual either in homozygous dominant or homozygous recessive condition.

A French geneticist L. Cuenot (1905) reported on the inheritance of mouse body colour. He found that “yellow” body colour was dominant over normal “brown” colour and was governed by single gene “Y”. It was observed that yellow mice could never be obtained in homozygous condition
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