Question

PLEASE HELP!!! CHECKING ANSWERS! MEDALS! QUESTIONS FOLLOWS

Answer 1

Natural selection acts directly on...
a) alleles.
b) genes.
c) phenotypes.
d) mutations.

I think it is C.


In a fox population, the allele frequency of a gene for red fur changes from 20 percent to 30 percent. What can you say about that population of foxes?
a) The population is expanding.
b) The population is evolving.
c) The population is decreasing.
d) The population is not evolving.

Leaning towards B.

Sexual reproduction among members of a population results in..
a) different types of alleles in the gene pool.
b) changes in the allele frequencies in the gene pool.
c) no changes in the allele frequencies in the gene pool.
d) an absence of genetic variation in the population.


I'm not sure about this one...

Genetic Recombination includes the independent movement of chromosomes during meiosis as well as...
a)mutations from radiation
b) changes in the allele frequencies
c) crossing-over
d) mutations from chemicals

I think C.

Answer 2

1 -CORRECT

Answer 3

2 - correct

Answer 4

3 - I THINK is B

Answer 5

4 - crossing over

Answer 6

I'm stuck on the third one

Answer 7

1-correct

Answer 8

I'm stuck between b and c

Answer 9

aha, c is a potential answer too :}

Answer 10

:(

Answer 11

its C

Answer 12

C seems like the most logical imo.

Answer 13

for number 2, the foxes don't have to be evolving for more of them to have red fur. They breed with each other and the red fur'd foxes are getting breed more. D