In a family, father is homozygous dominant (AA) for a gene A and his wife is homozygous for its ressive allele (aa) showing albino phenotype. It was surprising that their child showed the albino phenotype. Which of the following phenomenon can explain the phenotype?

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#Question id: 5252

#Part-A Aptitude & General Biotechnology

Which type(s) of genetic transfer lead to incorporation of new DNA into the bacterial chromosome?

I. Conjugation mediated by F factor

II. Hfr mediated conjugation

III. Transduction

IV. Transformation

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#Question id: 939

#Part-A Aptitude & General Biotechnology

Which of the following is/are true concerning transanimation reactions?

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#Question id: 4742

#Part-B Specialized Branches in Biotechnology

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: 2927

#Part-A Aptitude & General Biotechnology

Site-directed mutagenesis of Tyr-15 to Phe in cdc2:

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#Question id: 12187

#Part-B Specialized Branches in Biotechnology

How cells know whether sister kinetochores are properly attached to the mitotic spindle?