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oksano4ka [1.4K]
3 years ago
7

How does a human end up with an extra chromosome?

Biology
1 answer:
Burka [1]3 years ago
8 0

Answer:

It’s a change in gentic cells, or are missing extra chromosomes

Explanation:

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The most important organelle in cell transport A. E.R. B. Cytoplasm C. Nucleus D. Cell membrane
dimaraw [331]
I'm pretty sure it's Cell membrane
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3 years ago
Which of the following cells is formed by meiosis?
Lilit [14]

Answer:

B. A sperm cell

Explanation:

Meiosis creates gametes/sex cells, such as the sperm and egg.

So, sperm cells are formed by meiosis.

Meiosis doesn't create fertilized eggs, it instead creates normal egg cells.

Meiosis also doesn't create heart and bacterial cells because those are made in mitosis.

So, B is the correct answer.

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3 years ago
The ocean floor is at a lower elevation than the continents. Which of the following pieces of evidence best supports this claim?
andre [41]

Oceanic crust is thinner and denser than continental crust.

4 0
3 years ago
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Dafna11 [192]

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3 years ago
Giving brainliest. Need helpp
jolli1 [7]

Answer:

animals and plants

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4 0
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