Given the pKa values of different acidic sites in cysteine, the principal ionic form which will never exist at any pH

#Question id: 27940

#Unit 9. Evolution & Diversity of Life Forms

Sibling species are those species which is___

#Question id: 3375

#Unit 9. Evolution & Diversity of Life Forms

Which of the following combination is correct?

#Question id: 5875

#Unit 9. Evolution & Diversity of Life Forms

According to fossil record, the earliest fossils of liverworts are found in late Devonian, of mosses in early cretaceous, and vascular plants in the later Silurian/early Devonian. Anthoceros (hornworts) fossils have not been recovered. Reading fossil recores we would say that vascular plants appeared first and then liverworts.

However phylogenetic relationship (shown in figure) suggest otherwise. It may be that
(A) evolutionary history can be read directly from fossil record
(B) The moss lineage goes back to at least early Silurian/early Devonian
(C) Fossil can only set a maximum age for a lineage
(D) Fossil can only sets a minimum age for a lineage
(E) the divergence between liverworts and rest of land plants goes back to at least early Ordovician
Which of the following statements is correct?
 

#Question id: 31695

#Unit 9. Evolution & Diversity of Life Forms

Consider the following figure of sequence divergence over time. The dashed and solid lines represent synonymous and non-synonymous substitutions, respectively. Which one or more of the following does the figure support?

#Question id: 3216

#Unit 9. Evolution & Diversity of Life Forms

The frequency of galactosemia is approximately 1 in 40,000 live births. The frequency of the carrier state can be calculated as

#Question id: 3250

#Unit 9. Evolution & Diversity of Life Forms

Consider a diploid population at Hardy-Weinberg equilibrium. For a locus with two alleles, the frequency of the A1A1, A1A2 and A2A2 genotype is 0.01, 0.18 and 0.81) Which of the following statement is correct?