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koban [17]
3 years ago
15

S. What is another term for "building block?"​

Biology
1 answer:
kkurt [141]3 years ago
3 0

Answer:

Cell

Explanation:

I'm not 100% what you mean by "building block", but because your subject is biology, I will assume that you mean a cell.

In general, a cell is considered the "building block" of life because everything that is alive is made up of cells.

Hope I helped :)

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Answer:

B. The father did not contribute a sex chromosome to his daughter due to nondisjunction of the sex chromosomes. The daughter is XO and her only X chromosome came from her mother, who was a carrier.

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Explanation:

As seen in the question above, a little girl was diagnosed with Lesch-Nyhan syndrome, which is an X-linked recessive condition caused by a mutation in the HPRT1 gene responsible for purine metabolism.

The little girl's parents do not have the syndrome, and no one in the little girl's paternal family presented this syndrome, however, we know that the maternal grandfather of the little girl's mother had the syndrome, which means that it was the mother's genetic material that contributed to the development of the syndrome in the little girl. This was because the little girl did not receive any X chromosomes from her father, but she inherited the two X chromosomes from her mother that coded for the Lesch-Nyhan mutation. This happened because the mother's X chromosome disjuction did not occur during meiosis I.

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