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ruslelena [56]
2 years ago
9

Which of the following is a main point of cell theory?*

Biology
1 answer:
adoni [48]2 years ago
5 0

Answer:B

Explanation:

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In Achondroplasia the following genotypes and phenotypes are observed.
Alik [6]

Answer:

1/4 or 25%

Explanation:

<em>The chance that their children would have severe (;ethal) achondroplasia would be 25% or 1/4.</em>

From the illustration:

AA genotype is physically lethal,

Aa genotype conditions achondroplasia, and

aa genotype conditions normal height.

Now, a male whith achondroplasia (Aa) had children with a female with achondroplasia (Aa):

Aa   x   Aa

Progeny = AA, 2Aa, aa

<u>Out of the 4 children produced from the cross, one of them has </u><u>AA </u><u>genotype which represents severe (lethal) conditions. Thus, the chance that their children would have severe (lethal) achondroplasia is 1 out of 4 or 25%.</u>

4 0
3 years ago
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Which of the following is primarily responsible for the expression of different genes on a chromosome?
steposvetlana [31]

Answer:

Transcription factors

Explanation:

i just learnd that in biology class...

6 0
3 years ago
( 10 points) (pls help brainliest)
In-s [12.5K]

Answer:

The answer is option D. The retina is interrupted by the optic nerve.

Hope it helps........ pls mark as brainliest

8 0
3 years ago
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Which symbols (genotypes) are involved in the cross to produce the F2 generation of pink flowers?
babunello [35]
R  R      Rr is the result of 1st punnet square and the genotype used to produce f2
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8 0
3 years ago
In RNA molecules, adenine is complementary to
Marina CMI [18]
It would be uracil (C)
thymine would be complementary to adenine in DNA but because it is RNA it is replaced by uracil.
7 0
2 years ago
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