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telo118 [61]
3 years ago
15

Why don't nerve cells regenerate?

Biology
1 answer:
yKpoI14uk [10]3 years ago
8 0
They actually divide rarely, which are put in the category of G0 in the cell cycle. in G0, cells are unlikely to divide but still carry out their normal functions. some data suggests that neurons can divide but there is still research going on for this
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Autoimmune diseases occur when the immune system fails to recognize and tolerate ____________ antigens.
Dahasolnce [82]

Answer:

Harmful

Explanation:

When you have an autoimmune disorder, your immune system does not distinguish between healthy tissue and potentially harmful antigens.

6 0
2 years ago
How do sedimentary rocks form on Earth’s surface?
erik [133]

Answer:

I am 95% sure its b, if not then it is c

5 0
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6. The disposal of nitrogen-containing wastes, as through urination, is called ____
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3 years ago
Someone please calculate the ratio of offspring please help pleaseeeeeeeeeeeeeeee
Over [174]

Answer:

2. 1 Pink : 1 white

3. 1 Red : 1 Pink

4. 1 Red : 2 Pink : 1 White

Explanation:

This question involves a single gene coding for flower colour in snapdragon plants. The alleles of the gene exhibits incomplete dominance i.e. the red allele (R) ia not completely dominant over the white allele (W), hence an intermediate pink phenotype (RW) is formed. Based on this, a red snapdragon will have genotype, CRCR while a white one will have genotype, CWCW. The intermediate pink phenotype will have a genotype, CRCW.

The image attached to this question shows four crosses between different traits.

In the second cross between a pink (CRCW) and white offspring (CWCW), 2pink and 2white offsprings will be possibly produced in the ratio 1:1.

In the third cross between a red (CRCR) and pink (CRCW) snapdragon, 2 red and 2 Pink offsprings will possibly be produced in a ratio 1:1.

In the fourth cross between a pink (CRCW) and pink (CRCW) snapdragon, red, pink and white offsprings will be produced in the ratio 1:2:1.

See attached image for the complete punnet square. Note that, there was a mistake in the Genotype of the last cross i.e. pink has genotype CRCW not CWCW.

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In which location will you see polaris at the highest altitude in the sky
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The location northward the Polaris climbs higher in the sky.
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