Answer:
four billion years ago the earth had a layer of ozone gas
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❖ A vacuole is found in both plant and animal cells but is larger in plant cells. The vacuole stores food, waste, or any other nutrients that the plant or animal may need.
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Answer:
most of the cell are transparent
Answer:
(d) At least one child is phenotypically normal.
Explanation:
To be a carrier means that you have the gen but you are not affected by it.
If both parents have that recessive gene, this means, both are heterozygous for that trait.
Let's say this gen is A, for the dominant trait, and "a" if it's recessive.
The mother and the father are Aa.
If you cross them you have Aa x Aa = AA Aa aA aa
This means you have 50% of Aa, carrier children
25% AA, not a carrier or affected by this gen.
25% aa, affected by the gen.
<span>it would cause the cell to lose all of its contents to the outside</span>