Exam 1

Question 1

microevolution

Answer 1

change in a single allele or gene frequency

Question 2

Evolution

Answer 2

chane in one or more heritable characteristics of a population or species from one generation to the next

Question 3

macroevolution

Answer 3

involves the formation of a new species (phenotypes)

Question 4

population genetics

Answer 4

study of genes and genotypes in a population

Question 5

species

Answer 5

a group of related organisms that share a distintive form

Question 6

population

Answer 6

all members of a species that live in the same area and have the opportunity to interbreed

Question 7

George Buffon

Answer 7

population of livig things change over time

Question 8

Lamarck

Answer 8

inheritance of acquired traits due to changes in behavior to adapt to new environments

Question 9

Darwin

Question 10

catastrophism

Answer 10

sudden, violent events shaped earth (6000 yrs old)

Question 11

uniformitarianism

Answer 11

slow geological processes shape Eart (much older that 6000 yrs)

Question 12

natural selection

Answer 12

1. more offspring than can survive
2. competition for limited recourses
3. individual with beneficial heritable traits are more likely to survive

Question 13

convergent evolution

Answer 13

two species from different lineages have similar traits bc they occupy the same environment

Question 14

homology

Answer 14

fundamental similarity that occurs due to descent from a common ancestor

Question 15

homologous structures

Answer 15

Structures that are similar to each other because they are derived from the same ancestral structure.

Question 16

gene pool

Answer 16

all of the alleles for every gene in a given population

Question 17

polymorphism

Answer 17

presence of two or more variants or traits for a given character within a population

Question 18

polymorphic gene

Answer 18

two or more alleles with a frequency of greater than one percent