$$f(A) = \frac{(2 \times 40) + 40}{2 \times 100} = 0.6$$

Question 1

Which of the following best describes the role of the promoter in an operon?

Accepted Answer

It is the site where RNA polymerase binds to initiate transcription.

Question 2

A mutation prevents cAMP from binding to CRP in the lac operon. What is the most likely effect?

Accepted Answer

Transcription from the lac operon will decrease.

Question 3

Which of the following mutations is most likely to result in a frameshift?

Accepted Answer

Insertion of two nucleotides into a coding region.

Question 4

During translation, which tRNA site in the ribosome receives the incoming aminoacyl-tRNA first?

Accepted Answer

A site

Question 5

Which equation is used to calculate allele frequencies in a population under Hardy-Weinberg equilibrium?

Accepted Answer

$$p + q = 1$$

Question 6

A population of 100 chimpanzees has 40 individuals with genotype AA, 40 with Aa, and 20 with aa. What is the frequency of the A allele?

Accepted Answer

$$f(A) = \frac{(2 	imes 40) + 40}{2 	imes 100} = 0.6$$

Question 7

Which of the following is NOT an assumption of Hardy-Weinberg equilibrium?

Accepted Answer

Non-random mating

Question 8

Which of the following statements about natural selection is correct?

Accepted Answer

Natural selection acts on heritable variation in response to environmental pressures.

Question 9

Which of the following would most likely lead to allopatric speciation?

Accepted Answer

A river divides a population of mice, preventing gene flow.

Question 10

Which cloning technique is incorrectly matched with its function?

Accepted Answer

Plasmid – used to sequence DNA

Question 11

Which of the following is a biotic factor that could affect the distribution of fish in a lake?

Accepted Answer

Predation by birds

Question 12

Which of the following best describes mutualism?

Accepted Answer

Both species benefit from the interaction.

Question 13

Which of the following would most directly be attributed to rising temperatures in a biome?

Accepted Answer

Replacement of coniferous forests with temperate broadleaf forests

Question 14

Which of the following is NOT a defining characteristic of terrestrial biomes?

Accepted Answer

Tropical forests are defined by a lack of diversity in animal life.

Question 15

Which of the following would most likely lead a population to reach its carrying capacity more quickly?

Accepted Answer

Increased birth rate

Question 16

Which equation describes the expected genotype frequencies under Hardy-Weinberg equilibrium?

Accepted Answer

$$p^2 + 2pq$$ + $$q^2 = 1$

Question 17

Which of the following is an example of a foundation species in a terrestrial ecosystem?

Accepted Answer

Oak trees in a temperate forest

Question 18

Which of the following is a density-dependent factor affecting population growth?

Accepted Answer

Competition for resources

Question 19

Which of the following is NOT a step in the polymerase chain reaction (PCR)?

Accepted Answer

Restriction enzyme digestion of DNA

Question 20

Which of the following best describes the relationship between lynx and snowshoe hares in Alaska?

Accepted Answer

Predation

General Biology Final Exam Study Guide: Genetics, Evolution, Ecology, and Biotechnology

Study Guide - Practice Questions