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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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What is a compound calcium water air or iodine
vlabodo [156]
Water is the compound. Iodine and calcium are elements, and air is a mixture
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4 years ago
Why is it colder in the winter than in the summer? A. The Earth is tilted towards the sun in the summer and away from the sun in
S_A_V [24]

Answer:

the answer is a

Explanation:

the earth spins once a day that's why we get day and night,but now while were spinning around the sun and spinning for one day its creates special zones for the seasons. And also the axis of the earth is always tilted ,and this also helps the seasons.

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4 0
4 years ago
Read 2 more answers
What is a stimulus? What is homeostasis? How are irritability and homeostasis related? Describe an example of homeostasis, respo
lozanna [386]

Answer:

All is in order.......

stimulus is a thing or event that evokes a specific functional reaction in an organ or tissue.

homeostasis is the tendency toward a relatively stable equilibrium between interdependent elements, especially as maintained by physiological processes.

Irritability is that characteristic of living organisms in being aware of, and being able to respond to, a stimulus which tends to disturb the steady state or homeostasis which all organisms prefer for maintaining life.

Humans' internal body temperature is a great example of homeostasis. When someone is healthy, their body maintains a temperature close to 98.6 degrees Fahrenheit (37 degrees Celsius). Being warm-blooded creatures, humans can increase or decrease temperature internally to keep it at a desirable level.

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8 0
4 years ago
Two spotted leopards produce a litter of four cubs. Three of the cubs are spotted and one is solid black. The black coat is prob
Yakvenalex [24]

Two spotted leopards produce a litter of four cubs. Three of the cubs are spotted and one is solid black. The black coat is<u> Recessive Trait</u>

Explanation:

A recessive trait is a trait that  have  been expressed when an organism has two recessive alleles or two forms of a gene.

Traits are called the physical/non-physical  characteristics of a organisms that can or cannot  be observed.

Physical characteristics like hair, eye color  can be observed while other characteristics like the  shape of blood cells cannot be observed.

It is important to note that if the trait is dominant, one of the parents will have the trait. Dominant traits does not skip  a generation. In case  the trait is recessive, neither of the parent will have the  trait .Recessive trait can skip a generation

So we can say that in the case mentioned in the question

Two spotted leopards produce a litter of four cubs. Three of the cubs are spotted and one is solid black. The black coat is<u> Recessive Trait</u>

7 0
3 years ago
The primary electron acceptor in photosystem II is __________. Group of answer choices P700 P700 P680 P680
sesenic [268]

Answer:

680

Explanation:

When the P680 special pair of photosystem II absorbs energy, it enters an excited (high-energy) state. Excited P680 is a good electron donor and can transfer its excited electron to the primary electron acceptor, pheophytin.

7 0
3 years ago
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