lect 9

Question 1

a population ecologically

Answer 1

A group of individuals of the same species living within
a restricted geographical area any 2 can interbreed

Question 2

a population Genetically

Answer 2

A group of individuals who share a common gene pool
and have the potential to interbreed.

Question 3

population genetics is the study of..and

Answer 3

application of Mendel’s laws and other principles to entire
populations
changes in gene
frequencies

Question 4

examining a population

Answer 4

phenotype variation/genotype variation

Question 5

population genetics in culture vs science

Answer 5

culture : composition and evolutionary forces

science: inheritance and prevalence of genes using stats

Question 6

Population genetics examines

Answer 6

adaptation, speciation, population subdivision,
and population structure

Question 7

processes of evolution

Answer 7

Natural selection/gene flow/mutations

Question 8

Phenotypic differences can be..

Answer 8

quantitative or qualitative

Question 9

some genotypes can have

Answer 9

different phenotypes due to environment impact

Question 10

natural populations are…
the more closely related the

Answer 10

phenotypically diverse
less variability

Question 11

low variability disadvantage

Answer 11

extinction when environmental conditions change

Question 12

Population genetics deals with …especially
where it is due to differences in..of
individuals.

Answer 12

phenotypic diversity,
the genotypic composition

Question 13

allele freq
evolution

Answer 13

rate of allele occuring at a particular locus, high is common allele , low is rare allele
change in allele freq

Question 14

Forces Affecting Change in Allele Frequency

Answer 14

1.Natural Selection
2. Mutation:
3. Gene Flow:
4. Genetic Drift:
5. Genetic Bottleneck:
6. Sexual Selection:

Question 15

Natural Selection:
2. Mutation:
3. Gene Flow:

Answer 15

favors alleles offering fitness advantages.

introduces new alleles through “mistakes” in DNA copying.

introduces new alleles through dispersal (immigration).

Question 16

Genetic Drift:
5. Genetic Bottleneck: .
6. Sexual Selection:

Answer 16

random change in allele frequency (e.g., demographic
isolation).

decreased diversity through culling/decline (e.g., flood)

favoring more “attractive” alleles (e.g., body shape).

Question 17

Genes include

Answer 17

transcribed section and a regulatory
element

Question 18

how mendel defined his laws

Answer 18

by observing the
segregation of variants in the progeny of crosses and observing the genes being expressed

Question 19

dominant and codominant

Answer 19

recessive allele not
expressed in an heterozygous individual.

intermediate in the heterozygote

Question 20

‘GENE’ is
genotype is

Answer 20

physical entity that is
transmitted from parents to offspring

sum of all genes

Question 21

impossible for two individuals in a
population to have the same genotype at all loci except…

Answer 21

identical twins

Question 22

molecular technologies reveal

Answer 22

polymorphisms

Question 23

What is Polymorphism

Answer 23

co-existence of two or more alternative phenotypes caused by alternative alleles of one gene.

Question 24

polymorphism molecularly

Answer 24

co-existence of alternative banding
patterns or DNA variants

Question 25

phenotypic trait is said to be polymorphic if,,,

Answer 25

more than one form of the
gene or trait exists in a population.

Question 26

local interbreeding units are usually called …..

Answer 26

local populations,
sub-populations or simply populations.

Question 27

members of a species are..
Subdivision of populations are often due to ……
population size is not ..

Answer 27

unevenly distributed
accidents
infinitely large nor constant