Question

one similarity between natural selection and genetic drift is that both events?

Answer 1

hi

Answer 2

hi

Answer 3

still need help???

Answer 4

yeah do you think you can help?

Answer 5

sure

Answer 6

Both change the availability of certain alleles in the gene pool.
Natural selection is a natural process resulting in the evolution of organisms best adapted to the environment. ie predators eat the slower prey, so faster genes survive to spread to the next generation.
Random fluctuations in the frequency of the appearance of a gene in a small isolated population, presumably owing to chance rather than natural selection. ie 50 people move from America to a small island in the Caribbean, and stay isolated there for many centuries. If maybe 20 of those original 50 people carried a gene for say, early onset male baldness, that would not mean that 20 out of every 50 people in US have that gene, that just means that this happened by chance. If they inbreed for centuries, eventually most or all of them will carry this gene. This is why it is important that our gene pool does not become stagnant. does that help????

Answer 7

yeah it makes more sense now thanks! Do you think you could help me with one more?

Answer 8

yep go for it :)
and your welcome

Answer 9

Genetic drift tends to occur in populations that?

Answer 10

does this help
Genetic drift is more likely to be significant in small populations. A shift in a gene pool’s content can be caused by random fluctuations in allele frequencies due to accident & chance losses removing one trait more than another, but this is rarely significant in large populations.

In large populations random events tend to cancel out. The random event’s impact is most profound on small population, this can produce a founder effect in a small initial gene pool.

Answer 11

and thank you :)

Answer 12

np, thank you for helping me(: it all made sense.

Answer 13

good i'm glad i could help u
let me know if you need more help :)