#Question id: 4919
#Unit 8. Inheritance Biology
Genes for cytoplasmic male sterility in plants are generally located in
#Question id: 4928
#Unit 8. Inheritance Biology
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: 4929
#Unit 8. Inheritance Biology
Maternal inheritance of coiling of shell in snail (limnaea peregra) is well established. The dextral coiling depends on dominant allele D and sinistral coiling depends upon recessive allele d. A female F1 progeny of dextral(Dd) type is crossed with a male dextral (Dd). What will be the phenotype ratio in progeny?
#Question id: 4930
#Unit 11. Evolution and Behavior
Which of the following is the correct sequence of events in the origin of life?
I. Formation of protocells
II. Synthesis of organic monomers
III. Synthesis of organic polymers
IV. Formation of DNA-based genetic systems
#Question id: 4931
#Unit 11. Evolution and Behavior
During course of evolution first prototroph was anoxygenic?
#Question id: 4932
#Unit 11. Evolution and Behavior
Which of the following is the best hypothesis regarding origins of nucleic acids?