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torisob [31]
3 years ago
9

Studying one trait at a time ensures that multiple Are not changing simultaneously

Biology
1 answer:
ELEN [110]3 years ago
6 0
1. Variable
2. Pea plants reproduce sexually.

Female and Male sex cells on pea plants (have a variety of traits) allowed Mendel to cross pollinate them.
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With shorter necks, giraffe ancestors could not reach food-containing branches on tall trees. This resulted in the directional selection of giraffes with longer necks.

 

<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:

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