A certain kind of snail can have a right-handed direction of shell coiling (D) or left handed coiling (d). If direction of coiling is due to a protein deposited by the mother in the egg cytoplasm, then a Dd egg-producing snail and a dd sperm-producing snail will have offspring of which genotype(s) and phenotype(s)?

#Question id: 29417

#Unit 6. System Physiology – Plant

The first committed enzymatic step in the Calvin cycle is the reaction of CO2 and water with a five-carbon acceptor molecule is catalyzed by?

#Question id: 2921

#Unit 2. Cellular Organization

During which stage of the cell cycle is the chromosome content of a mammalian liver cell 1n?

#Question id: 3523

#Unit 8. Inheritance Biology

If the number of heterozygous pairs involved in a particular cross is three, the phenotype ratio obtained in their F2 generation will be-

#Question id: 3532

#Unit 8. Inheritance Biology

In a plant species, flower color purple is dominant over white. One such purple-flowered plant upon selfing produced 35 viable plants, of which 9 were white flowered and the rest were purple flowered. What fraction of these purple-flowered progeny is expected to be pure purple-flowered line?

#Question id: 1634

#Unit 4. Cell Communication and Cell Signaling

What is the main reason an experimental animal treated with X-rays can act as a living test tube for lymphocyte transfer experiments?