Patterns Of Inheritance Ch. 10

Question 1

Define polygenic

Answer 1

Caused by more than one gene; typically expressed as a continuum of possible phenotypes.

Question 2

Define evolution

Answer 2

Descent with modification

Question 3

Define population

Answer 3

Interbreeding members of the same species

Question 4

Define Gene pool

Answer 4

The populations entire collection of genes and their alleles

Question 5

Define allele frequency’s

Answer 5

Alleles frequency is calculated as the number of copies of that Allele divided by the total number of alleles in a population

Question 6

What are the two subcategories of evolution?

Answer 6

Microevolution and macroevolution

Question 7

What is convergent evolution?

Answer 7

Two species that live on opposite sides of the planet may never the less share characteristics because they evolved in similar environmental conditions

Question 8

What is natural selection?

Answer 8

Differential reproduction of organisms based on inherited traits

Question 9

What is artificial selection

Answer 9

Selective reading strategy in which a human allows only organisms with desired traits reproduce

Question 10

Define genotype frequency

Answer 10

Number of individuals of one genotype divided by the number of individuals in the population

Question 11

What is gene flow

Answer 11

The movement of alleles between populations

Question 12

Describe the Hardy Weinberg equilibrium

Answer 12

1. natural selection does not occur
2. mutations do not occur
3. the population is infinitely large or at least large enough to illuminate random changes in allele frequency’s
4. individuals made at random
5. individuals do not migrate into or out of the population

Question 13

What is genetic drift

Answer 13

A change in allele frequency is that occurs purely by chance

Question 14

What are the three different directions of natural selection

Answer 14

Directional selection
Disruptive selection
Stabilizing selection