Genetics, Molecular Biology and Evolution-Sex Chromosomes [IAS (Admin.) Mains Botany]: Questions 1 - 2 of 2
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Question 1
Appeared in Year: 2014 (IFS)
Describe in Detail Subjective▾
What is accounted for by Lyon՚s hypothesis? Cite an example. (Paper 2 - Section A)
EditExplanation
The Lyon՚s Hypothesis
- The Lyon՚s hypothesis was described by Mary Lyon in 1962.
- The Lyon՚s hypothesis does not related to germ cells and explains the phenomenon of heterozygous female carries of X-lined recessive disorders showing features of the condition.
- The Lyon՚s hypothesis was also explains the phenomenon of Barr bodies.
- The Lyon hypothesis relat…
… (327 more words, 15 figures) …
Question 2
Appeared in Year: 2020
Describe in Detail Subjective▾
Describe the significance and uses of the following: Male Sterility
EditExplanation
Male Sterility
- Male sterile plants develop from the lack of pollen production. Male sterile mutants occur in certain agricultural plants, and their inheritance follows one of two patterns: those in which the characteristic is acquired by a single recessive chromosomal gene segregating in Mendelian ratios, or those that exhibit maternal transmission.…
… (328 more words) …