The F2 progeny from a particular cross exhibit a modified dihybrid ratio of 9 : 7 (instead of 9 : 3 : 3 : 1). What phenotypic ratio would be expected from a testcross of the F1?

#Question id: 5735

#Part-B Specialized Branches in Biotechnology

Aneuploids may arise through nondisjunction, the failure of homologous chromosomes or sister chromatids to separate in meiosis. Following some statement are correct.

A)  Meiosis I non-disjunction leads to produce all gamete become aneuploidy

B) Meiosis II non-disjunction leads to produce half of gametes n+1 other half normal haploid

C) Meiosis I non-disjunction leads to produce half of gametes n+1 other half n-1

D) Either meiosis I or meiosis II non-disjunction leads to produce all aneuploidy gamete

#Question id: 5736

#Part-B Specialized Branches in Biotechnology

Two zygote in which one A is 44+XYY and another B is 44+XXX karyotype is best described by

#Question id: 5737

#Part-A Aptitude & General Biotechnology

#Question id: 5738

#Part-A Aptitude & General Biotechnology

It was once thought that the ____ karyotype was related to criminal disposition because it led to aggressive behavior due to excessive "maleness".

#Question id: 5739

#Part-A Aptitude & General Biotechnology

Polyploid plants found in nature usually have even numbers of chromosomes because organisms having odd numbers

#Question id: 5740

#Part-A Aptitude & General Biotechnology