Tag: CSIR NET Life Science Previous Year Questions and Solution on Morphogenesis and Organogenesis in Animals

The mammalian genital ridge is bipotential. Which one of the following statements regarding determination of the fate of genital ridge is INCORRECT? (1) The activation of Sox9 gene promotes testis […]

Following statements were made about sex determination in Drosophila melanogaster A. It is achieved by a balance of female determinants on the X-chromosome and male determinants on the autosomes. B. […]

A mutant embryo of Drosophila in which one of the major sex determining gene, sex lethal, can only undergo default splicing, was allowed to develop. The following statements are towards […]

Sxl genes of Drosophila regulate expression at (1) Transcriptional level (2) Post transcriptional level (3) Translational level (4) post translational level Introduction Sex determination in Drosophila hinges on the function […]

Individuals having X chromosome and short arm of Y chromosome are male while individuals having X chromosome and long arm of Y chromosome are female. This suggest that (1) Genes […]

In Drosophila XO are male and XXY are female while in humans XO are female and XXY are male. On the basis of given information which statement is NOT true […]

It has been observed the transfer of certain X segment in XO male of Caenorhhabditis elegans, restores female character. It suggest that mode of sex determination is (1) X/A ratio […]

Drosophila with chromosome complement XXXXY/AA will be- (1) Meta female (2) meta male (3) normal male (4) Intersex Introduction to Drosophila Sex Determination Drosophila melanogaster utilizes a unique mechanism of […]

Sex determination in Drosophila is based on ratio of number of X chromosomes to- (1) Number of autosomes (2) Sets of autosomes (3) Number of Y chromosome (4) Sets of […]

The following assumptions were derived from the above experiment: A. Medium A contained FGF and PDGF. B. Medium B contained retinoic acid. C. Cells cultured in Medium B were determined […]