#Question id: 3839
#Unit 3. Fundamental Processes
Use the figure to answer the following question. In the late 1950s, Meselson and Stahl grew bacteria in a medium containing "heavy" (radioactive) nitrogen (15N) and then transferred them to a medium containing 14N (nonradioactive). Which of the results in the figure would be expected after one round of DNA replication in the presence of 14N?
#Question id: 3254
#Unit 11. Evolution and Behavior
Consider a single locus with 2 alleles which are at Hardy-Weinberg equilibrium. If the frequency of the heterozygous genotypes is 0.42, what is the frequency of one homozygote in the population?
#Question id: 31260
#Unit 4. Cell Communication and Cell Signaling
#Question id: 3408
#Unit 11. Evolution and Behavior
New species originated via punctuated equilibrium having some characterstic feature
a. occur during cladogenesis from ancestral species
b. subpopulation of ancestral species transform in to new species
c. Morphological change is sudden and rapid
d. continuously change in their morphology
which above statement is correct
#Question id: 1409
#Unit 4. Cell Communication and Cell Signaling
Which DNA repair system is affected in patients with xeroderma pigmentosum?