Assertion : In humans, the gamete contributed by the male determines wheter the child produced will be male or female Reason : Sex in humasn is a polygenic trait depending upon a cumulative efffect of some genes on X-chromosome and some on Y-chromosome .A. If both the assertion and the reason are true and the reasons is a correct explanation of the assertionB. If both the assertion and reason are true but the reason is not a correct explanation of the assertionC. If the assertion is true but the reson is falseD. If both the assertion and reason are false

Assertion : In humans, the gamete contributed by the male determines w

1.	Assertion : In humans, the gamete contributed by the male determines wheter the child produced will be male or female Reason : Sex in humasn is a polygenic trait depending upon a cumulative efffect of some genes on X-chromosome and some on Y-chromosome .A. If both the assertion and the reason are true and the reasons is a correct explanation of the assertionB. If both the assertion and reason are true but the reason is not a correct explanation of the assertionC. If the assertion is true but the reson is falseD. If both the assertion and reason are false
Answer» Correct Answer - C (c ) The sex of the child to be born is intially governed, by the chromosomal contribution of the father. All chromosomes are paired, and the Y is dominant over the X chromosome when combined with it. A child conceived will "therefore" be subject during development thereafter to a predisposition toward femaleness if receiving and X chromosome from the mother and an X chromosome from the father (XY), or towards maleness if receiveing an X chromosome from the mother but a Y chromosome from the father (XY) ."Therefore" sex in human is a monogenic not polygenic.

Discussion

No Comment Found

Related InterviewSolutions

Balbiani rings are present inA. PolysomesB. AutosomesC. Polytene chromosomesD. None of these
Balbiani discovered special type of chronomus larva which are recognized by the presence ofA. BandsB. LoospsC. Both bands and loopsD. All the above
A man and a woman, who do not show any apparent signs of a certain inherited disease, have seven children (2 daughters and 5 sons). Three of the sons suffer from the given disease but none of the daughters are affected which of the following mode of inheritance do you suggest for this diseaseA. Autosomal dominantB. Sex-linked dominantC. Sex-limited recessiveD. Sex-linked recessive
During organ differentiation in Drosophila, an organ is modified to another organ (such as wings may be replaced by legs). Genes responsible for such metamorphosis are calledA. double dominant genesB. plastid genesC. complementary genesD. homeotic genes
Individuals having homomorphic sex-chromosomes produceA. Only one gamete in complete life spanB. One type of gametesC. No gametesD. Two type of gametes
One functional unit of gene which specifies synthesis of one polypeptide is known as Or The equivalent of a structural geneA. ReconB. CloneC. CodonD. Cistron
The idea of mutains was brought forth byA. Hugo de Vries who worked on evening primroseB. Gregor Mendel who worked on Pisum sativumC. Hardy Weinberg who worked on allele frequencies in a populationD. Charles Darwin who observed a wide variety of organisms during sea voyage.
Both alleles express in heterozygote when they areA. lethalsB. co-dominantsC. semi-dominantsD. recessive allele
Depending upon the distance between any two genes, which is inversely proportional to the strength of linkage, cross overs will vary fromA. `50-100%`B. `0-50%`C. `75-100%`D. `100-50%`
Depending upon the distance between any two genes, which is inversely proportional to the strength of linkage, cross overs will vary fromA. 50-100%B. 0-50%C. 75-100%D. 100-150%

Discussion

No Comment Found

Related InterviewSolutions

Reply to Comment