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: 8776

#XL - S Microbiology

What kind of evidence has recently made it necessary to assign the prokaryotes to either of two different domains, rather than assigning all prokaryotes to the same kingdom?

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#Question id: 13219

#XL - R Botany

In the apoplast pathway, water moves exclusively

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#Question id: 12741

#XL - S Microbiology

 What will happen if too much antibody is present in the Agglutination process?

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#Question id: 20187

#XL - P Chemistry

The energy of the first electron in helium will be

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#Question id: 27652

#XL - U Food Technology

Bulgarian butter milk is made with the help of