In birds, sex is determined by a ZW chromosome scheme. Males are ZZ and females are ZW. A recessive lethal allele that causes death of the embryo is sometimes present on the Z chromosome in pigeons. What would be the sex ratio in the offspring of a cross between a male that is heterozygous for the lethal allele and a normal female?

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#Question id: 10396

#Part-B Specialized Branches in Biotechnology

Very low fluence response (VLFR) is

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#Question id: 5694

#Part-A Aptitude & General Biotechnology

In anaphase I, the chromosomes separate in  three different ways , which of the following way for chromosome saparation leads to nonviable gamete formation

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#Question id: 608

#Part-A Aptitude & General Biotechnology

The ʺTʺ state refers to the ________.

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#Question id: 18677

#Part-A Aptitude & General Biotechnology

Point mutations in DNA, such as occur in a range of human diseases, can be identified by 

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#Question id: 4801

#Part-A Aptitude & General Biotechnology

You set up a mapping cross involving two genes in Aspergillus and determine the following percentages of tetrad types: parental ditype 51%, nonparentalditype 49%. What can you say about your genes?