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BlackZzzverrR [31]
3 years ago
5

QUICK HELP AND YOU WILL BE PICKED BRAINLEIST

Biology
2 answers:
IrinaVladis [17]3 years ago
8 0

it’s down syndrome to be exact

Montano1993 [528]3 years ago
6 0

Answer:

down syndrome

Explanation:

people with down syndrome have an extra chromosome in the twenty-first pair

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<h3>Why is choosing a direction necessary? </h3>

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When compared to modern giraffes, the giraffe's ancient predecessors had a shorter neck. The plants that were lying at a higher level were inaccessible to them. Giraffe phenotypes have changed in various ways, and now have long necks to reach vegetation that is higher up. The extreme form is chosen above other features in directional selection. It was decided to choose the long-necked giraffe over the short-necked.

 

To know more about direction selection for longer necked giraffes visit:

brainly.com/question/3738222

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