#Question id: 4925
#Unit 8. Inheritance Biology
The pedigree in Figure shows the transmission of a trait in a particular family. Based on this pattern of transmission, the trait is most likely
#Question id: 4926
#Unit 8. Inheritance Biology
Shell coiling in snail is determined by genetic maternal effect for a single loci having D allele for dextral coiling but S allele for sinistral coiling. D dominant over S. which of the following cross would produced all progeny that is dextral coiling ?
I- DD Male X SS female
II- DD Male X DS female
III- SS Male X DD female
IV - DS Male X DS female
#Question id: 4927
#Unit 8. Inheritance Biology
following cross were allowed
I-Recessive phenotype female X Dominat phenotype male = all recessive phenotype
II-Recessive phenotype male X Dominat phenotype female = all dominant phenotype
Which of the following conclusion?
#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