#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?
#Question id: 4933
#Unit 11. Evolution and Behavior
What structure do protocells have in common with current cells?
#Question id: 4934
#Unit 11. Evolution and Behavior
What is another hypothesis regarding the formation of polymers such as proteins and nucleic acids?