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3241004551 [841]
3 years ago
9

Without genetic variation, the mechanisms of evolutionary change will not occur. There are several sources of genetic variation

Biology
1 answer:
MissTica3 years ago
6 0

Answer: A, B, and D

Explanation: I just took the test

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What did Mendel call plants that always produce the same color of flowers when allowed to self pollenate
Kamila [148]

Hello!

The answer to this question is;  A

Mendel had true-breeding pea plants that, if allowed to self-pollinate, would produce offspring identical to themselves.

Have a good day :)

3 0
3 years ago
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How many chromosomes, and which chromosomes, does each of the dughter cells contain
labwork [276]

The question is incomplete. However, if we consider this cell as human cell - the cell contain 23 pairs of chromosomes.

Answer:

Chromosomes consists of the constricted DNA associated with the proteins. Different species has different chromosome number. Two main types of chromosomes are heterochromatin and euchromatin.

The human cells contain the 23 pairs of chromosomes or 46 chromosome. If the cell divides by the process of mitosis than the chromosome number will be same in parent as well as the daughter cell. The daughter cell 23 pairs of chromosomes. If the cell divides by the process of mitosis the cell has 23 chromosome number as the meiosis reduces the chromosome number upto half.

7 0
3 years ago
Does sustainability cause environmental pollution in plants
gladu [14]

Answer:Environmental pollution is any discharge of material or energy into water, land, or air that causes or may cause acute (short-term) or chronic (long-term) detriment to the Earth's ecological balance or that lowers the quality of life. Pollutants may cause primary damage, with direct identifiable impact on the environment, or secondary damage in the form of minor perturbations in the delicate balance of the biological food web that are detectable only over long time periods.

Air pollution is the process which the substances and the energy forms are not present in normal atmospheric composition reach the atmosphere, or are present but in much lower concentrations.Air pollution is the introduction of chemicals, particulate matter, or biological materials that cause harm or discomfort to humans or other living organisms, or cause damage to the natural environment or built environment, into the atmosphere.

More than 3,000 substances that are not part of the atmospheric composition, falling in the atmosphere can be considered air pollutants.

Some substances that are normally present in the atmosphere in a certain concentration can be considerate pollutants because their concentration is much higher than usual concentration.

Also certain substances that are normally present in certain layers of the atmosphere (e.g. ozone in the stratosphere), once arrived in the troposphere is pollutant.

Some gases, such as oxides of nitrogen may have beneficial effect on vegetation, after hydration may affect the leaf fertilizer.

The air pollutants factors can be chemical (chemicals), mechanics (particles in suspension) physical (ionizing radiation) and acoustic (noise).

Explanation:if this helped mark me brainliest

4 0
2 years ago
What characteristic makes osmosis different from diffusion? Question 6 options: Net movement in osmosis is from areas of higher
Westkost [7]
The first answer is the correct one. Osmosis is only water and diffusion is everything else across a semi-permeable membrane.
7 0
3 years ago
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In general, most cell inclusions function as energy reserves or as a reservoir of structural building blocks. In general, most c
max2010maxim [7]

Answer:

Ofcourse it's true .Cell inclusions includes reserved food materials ,secondary materials like cell secretions and excretory products

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