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saw5 [17]
3 years ago
10

Zebra mussels can move from one lake to another by which method?

Biology
1 answer:
marysya [2.9K]3 years ago
8 0

Answer:

Zebra mussels are spread from one body of water to another by natural flow, carried on the feathers or feet of birds, or by humans in bait buckets or on boats.

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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
nlexa [21]

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

1/3 males

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:

<u>                            XL                  Xl</u>

<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.

That means 2/3 of the children will be females, and 1/3 will be males.

8 0
2 years ago
The major product of photosynthesis that is exported from the leaves to the rest of the plant is
fgiga [73]
Glucose..............
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3 years ago
Which of the following is the best definition of niche?
FrozenT [24]

Answer:

C.

Explanation:

A niche refers to the way in which an organism fits into an ecological community or ecosystem. How an organism interacts with it's environment. So, I believe the answer to be C.

Hope this helps. :)

8 0
3 years ago
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True or false? Pure water is tasteless.
astra-53 [7]
True water from nature has no taste
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3 years ago
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Are reactants in the process of cell reception
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Oxygen and glucose are both reactants in the process of cellular respiration. The main product of cellular respiration is ATP; waste products include carbon dioxide and water.Yes.

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3 years ago
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