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.
The answer is C. Either B or b
Answer:
Deforestation leads to the loss of biodiversity and of indigenous tribes’ homes. Deforestation also affects billions more people around the world indirectly, through its impact on climate change, water and nutrient cycling and food availability. The world’s benefit from conservation far outweighs the costs to the owner, such as the profit they lose by not logging. It would thus make sense for the wealthier North to simply pay the tropical countries in the South to conserve and protect their forests.
Explanation:
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A tympanic membrane, (is also called a tympanum), is the circular patch of skin directly behind the frog’s eye that we commonly call an eardrum. It functions much like our’s does.
The tympanum sends sound waves to the middle of the war then to inner ear, which allows a frog to hear both in the air and below water.
If the size of a cell increases it will be more difficult (all other things being equal) for diffusion to transport materials out of the cell. Therefore, less of the cell's interior will be able to come in contact with the cell's surface. If less of it comes in contact, less of it can cross the cell membrane.
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