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Ipatiy [6.2K]
4 years ago
15

What are some mechanisms of variation

Biology
1 answer:
andrew11 [14]4 years ago
5 0

Answer:Genetic variation can be caused by mutation (which can create entirely new alleles in a population), random mating, random fertilization, and recombination between homologous chromosomes during meiosis (which reshuffles alleles within an organism's offspring).

Explanation: I hope you understand!

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andrew-mc [135]

Answer:

1) pathway taken by water

water is absorbed from the soil, through the root hair cells and is transported by the xylem vessel up the stem to the leaf and/or flowers. From the leaf, some water is lost to the atmosphere as vapors escape out through the stoma present in the lower epidermal layer of the leaves.

2) water potential gradient

water potential refers to the concentration of water present. A gradient forms when there is a difference between the concentrations of water in two regions separated by a partially permeable membrane.

Hence, water moving down a water potential gradient means that it goes from a region of high water potential to a region of low water potential.

3) There are tiny openings on the lower side of the leaves called as stomata (plural: stoma) that allow for gaseous exchange to occur. These openings are controlled by guard cells which are open during the day and close during the night.

Hope that answers the question, have a great day!

8 0
3 years ago
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What stage of the developing embryo implants into the endometrium of the uterus?
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Answer:

This occurs in the first trimester of pregnancy and is called implantation.

Explanation:

I hope this helped you, Brainliest is appreciated.

5 0
3 years ago
What are the two parts of a lipid??
Nastasia [14]
Hydrophilic and hydrophobic
6 0
4 years ago
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Because it contains just a small amount of distortion over a local area, a _____ projection map is used to make road and weather
Yakvenalex [24]

Because it contains just a small amount of distortion over a local area, a <u>conic</u> projection map is used to make road and weather maps.

4 0
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Which is the best example of amplification of signal?​
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Answer:

activation of 100 molecules by a single signal binding event

Explanation: i hope this help

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