Answer:
As a cell is formed during meiosis in prophase I, each chromosome matches up with its opposite chromosome that is the same size. These chromosomes are both maternal (from the mother) and paternal (from the father). Then, the bottoms of these chromosomes exchange genetic information by replacing the bottom of one of their strand.Genetic recombination
When a cell undergoes meiosis, it gets either its mother's or father's chromosome for each cell. The chances for each of these is completely random, so it produces genetic diversity instead of it all coming from one parent.
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Explanation:
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The sun is about 70% hydrogen and 28% helium, so the two elements that make up the Sun almost in its entirety are hydrogen and helium.
The abiotic factors in salt marshes include:
1. High, variable salinity
2. Low oxygen levels
3. Turbidity
4. Varying temperature
5. Sulphide toxicity
Salt marshes occur in zones between low and high tides. Salt marshes are periodically flooded by tides , so the plants living there have had to adapt to being submerged in salt water.
Only a limited number of plant and animal species can tolerate the harsh conditions of salt marshes and therefore salt marshes are generally poor in species.