Answer: B
Explanation: Most mammals have only one pair of sex chromosomes in each cell. Males have only one Y chromosome and one X chromosome, while females have two X chromosomes. In Mammals, the Y chromosome contains a gene, SRY, which triggers embryonic development in a male.
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RNA, RNA proteins is what i learned how to do
It can become a sedimentary rock over time because of weathering. sedimentary rocks are rocks that have been broken down over time by water and erosion. hope this helps.
Answer:
George Washington is the first president
