lect 10

Question 1

Gene flow

Answer 1

is the passage and establishment of genes typical of one population in
the genepool of another

Question 2

how gene flow?

Answer 2

natural or artificial hybridization and backcrossing

Question 3

levels of population

Answer 3

Individual organisms.
 Subpopulations.
 Total population.

Question 4

sub populations can have different…..depending on…

Answer 4

genetic links
degree of gene flow

Question 5

why is there subpopulations?

Answer 5

ecological factors
behavioural

Question 6

structure of population affects

Answer 6

extent of genetic variation and its
patterns of distribution.

Question 7

structured population if

Answer 7

genetic drift is occurring migration does not happen uniformly
mating is not random

Question 8

allele freq

Answer 8

quantifying variation
how common an allele is
allelic differences at 1 locus

Question 9

This genetic variation needs to be quantified for different … and for different
……..

Answer 9

genes
individuals/populations

Question 10

calculating allele freq

Answer 10

no. of desired allele/all alleles
homo+half hetero

Question 10

sample should be….or the results are just..

Answer 10

100+
estimates

Question 11

genotype freq

Answer 11

freq of a certain genotype in a population

Question 12

relation between allele freq and genotype freq determined by

Answer 12

breeding system type

Question 13

natural breeding system
random mating has..
genotype freq is used to..

Answer 13

freq with alt geneotypes
expected genotypes patterns
estimate self pollination

Question 14

hardy weinberg rules

Answer 14

NO natural selection
NO mutations
NO sexual selection
NO migration
Infinite population size

Question 14

equations

Answer 14

p+q=1
p2+2pq+q2=1 (expected genotypic freq)

Question 15

hardy weinberg concept

Answer 15

randomly mating populations have constant allelic and genotypic freq from one generation to the other

Question 16

Random mating vs non random

Answer 16

outbreeding/inbreeding and asexual

Question 17

random mating retains large no of….while non random allows…

Answer 17

deleterious reccessive hidden alleles
reccessive alleles to be visible

Question 18

in breeding/non random is

Answer 18

when closely related organisms mate more frequently than due to chance

Question 19

recessive increase in..but no change in..

Answer 19

inbreeding/non random mating
allele freq

Question 20

mating classification

Answer 20

+ve > similar phenotypes
-ve> unsimilar phenotypes
inbreeding>relatives

Question 21

homozygousity increases in

Answer 21

non random mating

Question 22

selfing after generations (homozygous)

Answer 22

0-50-75-87.5
93-96-98-99-99.6

Question 23

heterozygoutes in cross pollinators have..

Answer 23

favourable effect

Question 24

asexual reproduction leads to…can be combined with sexual for..

Answer 24

no genetic diversity
new variation

Question 25

genetic diversity forces

Answer 25

mutation
migration
recombination
genetic drift
selection

Question 26

mutation

Answer 26

errors in replication/radiation spontaneous are low
diversity increases with low rate alone can not cause evolution

Question 27

migration

Answer 27

movement of individuals , introduction of new genes
increases diversity with significant rate

Question 27

change in gene freq is prop to..

Answer 27

the difference in
frequency between the recipient population and the average of the
donor populations.

Question 28

recombination

Answer 28

cell generates new chromsomal combinations
new combinations but same diversity
genetic variance if alleles are at different loci is quick

Question 29

selection

Answer 29

superior genotypes survive and increase in freq

Question 30

drift

Answer 30

fluctuations in allele freq by chance due to random sampling
decreases diversity as rare alleles are lost
random, no pattern