3 years ago

Homeostasis is a term which describes the process whereby the body ________.

1 answer:

3 0

<span>maintains a constant INTERNAL environment
so other options included internal variable and external environment. but its internal and environment</span>

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Hemophilia is a sex-linked trait. A hemophilic male produces offspring with a carrier female. What are the chances that the fema

Anton [14]

Hemophilia is a X-linked recessive trait. I will denote it as XA for dominant and Xa for recessive.

Hemophilic male: Xa Y
Carrier female: XA Xa

Cross:

Xa Y
XA XaXA XAY
Xa XaXa XaY

Thus, as shown, of the ratio of two possible female offspring genotypes for Hemophilia, only 1/2 will have the disease; the chance is therefore 50%.

The ratio for male offspring genotypes for Hemophilia is 1/2 as well; the chance is therefore 50%.

4 0

3 years ago

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How did the banned substances DDT and PCBs end up in the ocean?

lbvjy [14]

Answer:

PCBs and DDT are chemicals that were banned more than 30 years ago, but our air, water, land, and bodies are so contaminated that decades of cleanup efforts have yet to eliminate their threats to our health. Today, food is one of the most likely exposure routes to PCBs.

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3 years ago

Klinefelter syndrome in humans leads to underdeveloped testes and sterility. this is caused by which chromosomal condition?

Anuta_ua [19.1K]

Klinfelters syndrome is when there is an extra X chromosome in males.

So instead of the normal sex chromosomes for males (XY), a male with klinefelters syndrome will have XXY.

I have included a pic of the karyotype to give you a better idea of what I'm talking about.

Hope this helps! I'm happy to help with any other questions you might have :)