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sashaice [31]
2 years ago
7

Evolutionary theory contends that genetic ___________ is necessary and beneficial for humanity when there is an environmental ch

ange.
Biology
1 answer:
Anni [7]2 years ago
8 0

Answer:

variation

Explanation:

Genetic variation is what makes us all unique as a result of subtle changes in our DNA.  The Theory of Evolution is a process in which organisms change over time as a result of adapting to their environment.  Charles Darwin came up with the term Survival of the fittest, in any environment plants and animals from the same species show natural variation in their physical characteristics, like neck lengths in giraffes.  Darwin suggested that the plants and animals best suited to the environment will survive and pass on their characteristics to their offspring. Over time, the characteristics of the surviving members of the species will become predominant.

Example: Peppered moth

In London in the 1800's, 98% of peppered moths had light colored bodies and only 2% were dark.  The light moths were the same color as the trees so they could easily hide from hungry birds and not get eaten.  The dark moths however were easy to see and were eaten.  Then came the factories and smoke of the industrial evolution and many trees turned black with soot and suddenly the dark moths were able to survive better as they now looked like the trees and the light colored moths were easier to spot and eat.  By 1895 the dark peppered moths made up 95% of the population and the light colored moths only 5%.  This is an example of natural selection, because of the gene that makes the moths dark, it allowed them to flourish when the environment changed, they adapted, reproduced and survived.

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All cells contain genetic material <br><br><br> True<br><br> False
ivann1987 [24]

Answer:

No

Explanation:

The nucleus is where cells store their DNA, which is the genetic material, Right? Well,  Prokaryotic cells do not have a nucleus. So, therefore (lol) they do not have genetic material.

Your welcome, Love.

5 0
2 years ago
While researchers have discovered that there are an excessive number of receptor sites for _________________
Yuki888 [10]

Answer:

While researchers have discovered that there are an excessive number of receptor sites for dopamine, it is not the only neurotransmitter involved in schizophrenia.

Explanation:

7 0
3 years ago
Causes water molecules to rise up from the roots eventually reaching the leaves?
torisob [31]

Answer:

✔ Xylem ** is the correct answer

Explanation:

Xylem is the water transporting tissue in plants

4 0
3 years ago
Qué son los ciclos biogeoquímicos
Nataly_w [17]

Answer:

Biogeochemical cycles enable the transformation of matter from one form to another. This transformation enables the utilization of matter in a form specific to particular organisms. For example humans utilize water in liquid form.

Explanation:

english version lol

6 0
3 years ago
4 Which muscles are actively involved in normal breathing?
Pavel [41]
The lungs have no skeletal muscles of their own. The work of breathing is done by the diaphragm, the muscles between the ribs (intercostal muscles), the muscles in the neck, and the abdominal muscles.
6 0
2 years ago
Read 2 more answers
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