Biology, 18.03.2021 04:50 ladnerhailey16

Indicate whether the statement is true or false. 1. Sources of genetic variation include mutation, recombination, and lateral gene transfer.
2. A gene pool includes all alleles within a certain population.
3. If a population is in Hardy-Weinberg, then it is not evolving.
4. Recessive and dominant allele frequencies do not have to add up to 100%.
5. Natural selection acts directily on genotypes.
6. Isolations can be due to geographic, behavioral, or sensation barriers.
Multiple Choice
Identify the choice that best completes the statement or answers the question.
7. What type of curve is formed with a normal distribution?
a. steep curve c. punctuated curve
b. bell curve d. flat curve
8. Natural selection acts directly on
a. alleles.
b. genes.
c. phenotypes.
d. mutations.
9. What situation might develop in a population having some plants whose flowers open at midday and other
plants whose flowers open late in the day?
a. behavioral isolation
b. geographic isolation
c. temporal isolation
d. genetic drift
10. Which of the following are assumptions that evolution is happening...
a. Very small population c. Selective mating
b. Mutations d. All of the above
11. What commonly occurs after the bottleneck and founder effects?
a. gene flow c. genetic variation
b. genetic drift
12. If an allele makes up one half of the frequency of a population’s allele for a given trait, its allele frequency is
a. 100 percent.
b. 75 percent.
c. 50 percent.
d. 4 percent.
13. In a fox population, the allele frequency of a gene for red fur changes from 20 percent to 30 percent. What can
you say about that population of foxes?
a. The population is expanding.
b. The population is evolving.
c. The population is decreasing.
d. The population is not evolving.

Answers: 2

Show answers

Another question on Biology

Biology, 22.06.2019 01:30

What are some characteristics of a free enterprise economy?

Answers: 2

Answer

Biology, 22.06.2019 01:50

Four different thermometers were used to measure the temperature of a sample of pure boiling water. the measurements are recorded in the table below. thermometer temperature reading 1 temperature reading 2 temperature reading 3 w 100.1°c 99.9°c 96.9°c x 100.4°c 102.3°c 101.4°c y 90.0°c 95.2°c 98.6°c z 90.8°c 90.6°c 90.7°c the actual boiling point of pure water is 100.0°c. what can be concluded from the data about the reliability and validity of the thermometers?

Answers: 1

Answer

Biology, 22.06.2019 04:20

When in solution, a molecule that moves slowly across an artificial membrane moves rapidly across a plasma membrane. this molecule rapidly enters the cell regardless of whether its concentration is higher inside or outside the cell. using this information, which transport mechanism is most likely to be responsible for the movement of the molecule across a plasma membrane? view available hint(s)when in solution, a molecule that moves slowly across an artificial membrane moves rapidly across a plasma membrane. this molecule rapidly enters the cell regardless of whether its concentration is higher inside or outside the cell. using this information, which transport mechanism is most likely to be responsible for the movement of the molecule across a plasma membrane? active transportexocytosis

Answers: 2

Answer

Biology, 22.06.2019 12:30

Which of the following observation darwin shape his concept of descent with modification? a) species diversity declines farther from the equator. b) fewer species live on islands than on the nearest continents. c) birds live on islands located farther from the mainland than the bird's maximum nonstop flight distance. d) south american temperate plants are more similar to the tropical plants of south america than to the temperate plants of europe. e) earthquakes reshape life by causing mass extinctions.

Answers: 1

Answer

You know the right answer?

Indicate whether the statement is true or false. 1. Sources of genetic variation include mutation,...

Questions