Question

A certain widely distributed mammalian species remained unchanged for about 30 million years.
Most members of this species lived on a fertile plain, but some members (that were less well adapted) survived in low numbers in the surrounding mountains.

They adapted and evolved to this area and became significantly different from their relatives on the plain.

A sudden meteorite attack struck the plain and destroyed the plain population.

The mountain population was unaffected and as the plain environment recovered moved to the plain.

In the absence of competitors, they underwent a very rapid population explosion.

Which mode of evolution does this example explain?

Answer 1

yAlL i ReaLLy NeEd HeLp

Answer 2

After some research, I believe it is punctuated equilibrium.

Allow for the following diagram to help explain. It is a theory in evolutionary biology which proposes that most species generally will exhibit little net evolutionary change for most of their geological history, remaining in an extended state called stasis. Moreover, when significant evolutionary change occurs, the theory also proposes that it is generally restricted to rare and rapid (on a geologic time scale) events of branching speciation called cladogenesis. Cladogenesis is the process by which a species splits into two distinct species, rather than one species gradually transforming into another.

Answer 3

thats not helping

Answer 4

well its helping but like its not the easy answer im looking for

Answer 5

im gonna kms

Answer 6

Is it not one of the options?

Answer 7

nope

Answer 8

im just gonna say Microevolution

Answer 9

What are the options?

Answer 10

Cat

Answer 11

Punctuated equilibrium

b.
Gradualism

c.
Microevolution

Answer 12

its C

Answer 13

right?

Answer 14

Oh, punctuated equilibrium should be correct.

Answer 15

please dont fu.ck me up Soup

Answer 16

lmao*

Answer 17

ok next

Answer 18

A marathon runner keeps sipping glucose water at regular intervals. What could be the reason for this?

Answer 19

nvm this one is easy ash lol

Answer 20

to restore lost energy

Answer 21

An unknown solution changed the color of a phenolphthalein indicator from colorless to pink.
What would you comment about the pH of the unknown solution?

Select one:

a.
The given solution is acidic in nature.

b.
The given solution is basic in nature.

c.
The given solution is neutral in nature.

Answer 22

Oh alright.

Answer 23

?

Answer 24

A substance below pH 7 is considered acidic; above pH 7 is considered basic. Phenolphthalein is naturally colorless but turns pink in alkaline or basic solutions. It would be basic in nature.

Answer 25

yup right

Answer 26

Dimpled chin and free earlobes are two dominant characters in humans.
Smooth chin and attached earlobes are recessive characters.

A person has the genotype Ddff.

Which of the following statements is correct with respect to this genotype?

Select one:

a.
The person is heterozygous for the first character and homozygous for the second.

b.
The person is homozygous for both characters.

c.
The person is homozygous for the first character and heterozygous for the second.

Answer 27

@echofire

Answer 28

@devin1324

Answer 29

Well, the character is heterozygous and homozygous for the second.
An organism is homozygous if it carries two copies of the same dominant allele of a gene and Heterozygous means that an organism has two different alleles of a gene.

Answer 30

so A

Answer 31

Yes, it is A.

Answer 32

A population of small fish lives in a lake (Lake A).

The dark-colored fish are the ancestral phenotype and represent the usual coloration of the species.

The bright-colored fish, however, arose over time.

There is a steady rise in the population of bright-colored fish.

Both populations thrive.

Suppose that a short land barrier separates Lake A from another small lake with a population of only the normal dark-colored fish (Lake B).

After torrential rains lasting for days, the lakes overflow and a few of the bright-colored fish from Lake A are washed into Lake B.

List the sequence of evolutionary mechanisms which have come into effect in each event.

Select one:

a.
genetic drift, mutation, natural selection

b.
mutation, founder principle, bottleneck effect

c.
mutation, natural selection, migration (gene flow)

Jump to...

Answer 33

@echofire

Answer 34

I am a bit unsure, but after some research I would choose b..