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padilas [110]
3 years ago
15

9) How long was the Northeastern, United States blanketed by the ice sheet?

Biology
1 answer:
I am Lyosha [343]3 years ago
3 0

Answer:

between c. 95,000 and c. 20,000 years

Explanation:

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Why does the male parent's genes determine the sex of the baby?
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Consider this:

Each parent has two sex chromosomes.
The mother, as a female, has chromosomes XX.
The father, a male, has XY.

The mother will pass on one sex chromosome to the baby, as will the father.
The mother can only pass on an X.
The father, however, has a 50/50 chance of passing on an X or Y.
XX would make a female and XY would make a male.

Simply put, the sex chromosome from your mother is fixed, it's going to be an X no matter what. It's which sex chromosome your father passes on that determines your sex.

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cold environment as biodiversity means one particular ecosystem or habitat so in a cold environment only cold breeze flows.

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