#Question id: 4620
#Unit 11. Evolution and Behavior
The upper forelimbs of humans and bats have fairly similar skeletal structures, whereas the corresponding bones in whales have very different shapes and proportions. However, genetic data suggest that all three kinds of organisms diverged from a common ancestor at about the same time. Which of the following is the most likely explanation for these data?
#Question id: 3824
#Unit 3. Fundamental Processes
State whether the following statements is true/false regarding DNA replication.
1. The polymerization of DNA is essentially irreversible due to the hydrolysis of pyrophosphate.
2. On average about twenty errors are made during each replication of the human genome.
3. DNA polymerase I possesses 5ʹ → 3ʹ exonuclease activity.
4. All DNA ligase enzymes use ATP as a cosubstrate.
5. The purpose of SSB is to prevent single-stranded DNA from folding back on itself to form double-helical regions.
#Question id: 3261
#Unit 11. Evolution and Behavior
A parent population (P) is change into daughter populations (Q) which grow in habitats. After 1000 generations, the equilibrium frequency distribution of of the daughter populations is shown in the figure below. For reference, the vertical line represents the mean of the parent population. Which type of natural selection?
#Question id: 18224
#Unit 11. Evolution and Behavior
#Question id: 5371
#Unit 8. Inheritance Biology
The trait represented in the following pedigree (shaded symbols) is known to be inherited as a single dominant gene. Calculate the probability of the trait appearing in the offspring if the first cousins should marry and have children.