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kupik [55]
3 years ago
10

What causes genetic variation to be preserved or eliminated how does that affect evolution?

Biology
1 answer:
kkurt [141]3 years ago
3 0

Answer: genetic variation is a mutation or a change in the sequence of DNA. It can be preserved if that sequence is needed for a species to survive ( evolution). It can also be preserved if that sequence is strong enough to be passed down from mother to child. The mutation can be eliminated if it causes distress to the animal or if it makes the animals chances of survival smaller. If an extra fin on a dolphin helped it to better escape its predator and better obtain food then this trait may stick around because it is beneficial to the species. If the fin cause the dolphin to swim slower then the dolphin may not survive to reproduce or the trait will not pass on.

Explanation:

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kakasveta [241]

Answer:

Explanation:

Sí, porque Australia es una isla separada en Oceanía, la mayor parte de Australia se encuentra en los trópicos. Australia es la parte más caliente de la tierra en el hemisferio sur, que tiene un clima desértico semidesértico. Al Norte, este, sur-este y sur-oeste semidesérticos pasan a sabanas

.dan paso a bosques de eucaliptos, palmeras. helechos arborescentes a lo largo de las orillas y en las montañas. La fauna australiana se adapta mejor a este tipo de animal.

Allí viven varios animales marsupiales (Canguro, ardilla trepadora, rata trepadora (Koala o oso australiano), ornitorrinco y animales salvajes)

6 0
3 years ago
There is a definite place at which the brain begins and the spinal cord ends
olga2289 [7]

The answer is the spinal cord starts at the occipital bone where it passes over the foramen magnum, and encounters and go in the spinal canal at the start of the cervical vertebrae. The spinal cord encompasses down to amid the first and second lumbar vertebrae where the spinal cord ends.

6 0
3 years ago
Te gradient of a stream depends on its A. stream channel. B. speed. C. bass level. D. bank level
kotykmax [81]
C. Bass level
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8 0
3 years ago
Read 2 more answers
What do we call an individual that has one dominant and one recessive allele for a trait?
krek1111 [17]

Answer:

an individual that has one dominant allele and one recessive allele for a trait is heterozygous

7 0
3 years ago
3. What happens to the energy that is consumed by any level in an energy pyramid?​
beks73 [17]

Answer:

The amount of energy at each trophic level decreases as it moves through an ecosystem. As little as 10 percent of the energy at any trophic level is transferred to the next level; the rest is lost largely through metabolic processes as heat.

Explanation:

4 0
3 years ago
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