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alexandr402 [8]
3 years ago
7

Four different types of cells are shown below. . Which characteristic is shared by all four cells? A. Membrane-bound organelles

that transport substances B. A mechanism for transforming sunlight into energy C. Genetic material composed of DNA

Biology
2 answers:
aleksley [76]3 years ago
6 0
I think the answer is B
NNADVOKAT [17]3 years ago
5 0

Answer:

The answer is option c.

Genetic material composed of DNA

Hope this helps.

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The use of which material can substitute for copper and reduce copper mine production?
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Answer:

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Una mujer lleva en uno de sus cromosomas X un gen letal recesivo (l), y en el otro alelo dominante normal (L). ¿Cuál es la propo
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Question in English:

A female carries a recessive lethal gene (l) on one of her X chromosomes, and a normal dominant allele (L) on the other. What is the sex ratio to be expected in this woman's dependency if she marries a normal man?

Answer:

2/3 females

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Explanation:

Females have two X chromosomes (XX) and males have an X and a Y chromosome (XY).

The genotype of the female is XLXl. The genotype of the male is XLY, since he is normal.

The possible genotypes are:

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<u>XL</u>                     <em>XLXL             XLXl</em>

<u>Y</u>                       <em>XLY               </em><em>XlY</em>

<em />

All female offspring will be normal as they will always have one normal copy of the X chromosome from their father.

50% of the male offspring will be normal, but 50% will inherit the lethal gene from their mother.

Because the allele is lethal, that means XlY males will not be born.

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