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.
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Why is choosing a direction necessary? </h3>
It nearly appears obvious that the giraffe's long neck developed as a result of a lack of food in the lower branches of trees. The giraffe has a significant advantage because it is taller than any other mammal and can feed where few others can.
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.
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Answer:
17. C " TAAGCTG". It would be the replication strand because A always pairs with T and C always pairs with G, so replication strands just have the opposite base as the original strand
18. Transcription is the name given to the process in which DNA is copied to make a complementary strand of RNA. RNA then undergoes translation to make proteins. The major steps of transcription are initiation, promoter clearance, elongation, and termination.
19. Straight hair is controlled by a recessive allele because as you can see the one where is not shaded is the one that has the most. There are only 1 shaded circle or square, out of the 12 other circles or square that is not shaded. This means that it is the recessive allele because people are less prone to getting straight hair, as you can see in that diagram.
Wasn't this the same question you asked earlier?
Answer:
I believe it is : water and nitrogen
Explanation:
There are 2 types of cells eukaryotic and prokaryotic.
Na (Sodium) has a +1 charge.
An ion of calcium has a +2 charge, and an ion of chlorine has a -1 charge.
The charge of an aluminum ion is typically 3+.
A chlorine ion has -1 charge.
Beryllium is 2+ charge.
Flourine has -1 charge.
Lithium has +1 charge.
Iodine has -1 charge.
Oxygen has -2 charge.
Potassium has +1 charge.
Magnesium has +2 charge.
Phosphorus has -3 charge.
