Chaper 23 Evolution Of Scecies

Question 0

Differential survival and reproduction

Answer 0

Traits well suited for struggle over local resources will contribute more offspring to the next generation.

Question 1

Variation

Answer 1

Individual traits in appearance or behavior

Question 2

Natural selection acts on who

Answer 2

Individuals

Question 3

Evolution acts on

Answer 3

Populations over time

Question 4

Micro evolution

Answer 4

Change in allele frequency within a population over successive generations.

Question 5

Macro evolution

Answer 5

Major evolutionary transitions from one type of organism to another.

Question 6

Macro evolution acts on what taxa

Answer 6

Species and higher

Question 7

Emergence of new species

Answer 7

Speciation

Question 8

Descrete characteristic

Answer 8

Determined by one gene locus with different alleles

Question 9

Quantative characteristic

Answer 9

Influence of one or more genes on a phenotype

Question 10

Average percent of heterozygous of a single locus

Answer 10

Average heterozygosity

Question 11

Independent assortment

Answer 11

Mix of parental chromosomes in each gamete

Question 12

Gene pool

Answer 12

All copies of every type of allele in all members of the population

Question 13

Fixed allele

Answer 13

One allele at a particular locus in all members of the population

Question 14

Mathematical representation of a population that is not evolving for a particular allele

Answer 14

Hardy Weinberg principal

Question 15

P is ______ in a Hardy Weinburg equation

Answer 15

Frequency of dominant allele

Question 16

q is _____ in the Hardy Weinburg principal

Answer 16

Recessive allele

Question 17

What are the three mechanisms of evolution

Answer 17

Mutation , genetic drift, gene flow

Question 18

Genetic drift

Answer 18

Changes in allele frequency brought on by chance events.

Question 19

Gene flow

Answer 19

Fertile individuals moving between populations

Question 20

Founder effect and bottle neck effect are examples of

Answer 20

Genetic drift

Question 21

Few individuals with a limited gene pool establish new population

Answer 21

Founder effect

Question 22

Bottleneck effect

Answer 22

Catastrophic event dramatically reduces population

Question 23

3 types of natural selection

Answer 23

Directional, disruptive, stabilizing

Question 24

Conditions favor one extreme

Answer 24

Directional

Question 25

Conditions favor both extremes but not intermediate range

Answer 25

Disruptive

Question 26

Conditions favor intermediate range acting against extremes.

Answer 26

Stabilizing

Question 27

Intrasexual and intersexual are types of

Answer 27

Sexual selection

Question 28

Intrasexual

Answer 28

Same sex competing for mates

Question 29

Intersexual

Answer 29

One sex chooses mates

Question 30

Mechanisms to preserve/restore variation

Answer 30

Diploidy (plants) Balancing selection Heterozygous advantage Frequency dependent selection

Question 31

Constraints of natural selection

Answer 31

Only acts on existing variation Limited to historical constants Adaption often compromised Chance natural selection and environmental interaction (mutation)