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Nataly_w [17]
3 years ago
13

The extra chromosome which produces Down's syndrome is:

Biology
2 answers:
MrRissso [65]3 years ago
3 0

Answer:

the extra chromosome is "y"

drek231 [11]3 years ago
3 0

Answer: it would be x because when a child is born with down syndrome, that means the female gave 2 x chromosones and the male gave one x and one y chromosone.

Explanation:

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The pectoralis major muscle can be divided into groups of fibers superior, or __________, and inferior, or __________.
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The pectoralis major muscle can be divided into groups of fibers superior, or claviclular, and inferior, or sternocostal.

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is a mathematical modeling approach to predicting the outcome of natural selection on behaviors when multiple organisms are inte
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Evolutionary game theory is a mathematical modeling approach to predicting the outcome of natural selection on behaviours when multiple organisms are interacting.

<h3>What is natural selection? </h3>

According to modern concept of evolution natural selection is not a bloody battle as was emphasized by Darwin and Wallace.

It is a peaceful process that has little to do with, "struggle for existence" or "elimination of unfit" or "survival of the fittest".

Natural selection really means differential reproduction ( some members of the population produce lage no of offspring, some are few and still others none.

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This leads to change in the gene frequency of the population.

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There are three types of natural selection stabilizing

selection, directional selection and disruptive selection.

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This phylogenic tree shows the changes in bacterial species from the ancestral species to the most current split in the modern c
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Explanation:

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What is the purpose of the replication
stepan [7]

The purpose of the replication bubble is that it forms where replication is taking place (option A).

<h3>What is replication?</h3>

Replication is the process of producing replicas or duplicate of DNA or RNA molecules.

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