Consider the group of giraffes in the image below. Which statement about the giraffes explains their evolution based on Charles
Darwin’s main points? The closest fossil ancestor to these giraffes would have a very short neck. All three of the giraffes have an equal chance of reproducing regardless of the environment. As a giraffe reached for food, the giraffe could make its neck longer making it better adapted to the environment. Long necks were a random genetic change and resulted in the gradual increase of organisms with long necks.
If plants are purebred, then they are homozygous. This means that they have the exact same genes in one pair: for example, AA. If they are both purebred, then the dominant gene will win out every time. The answer for this question, then, would be D. Here is a diagram to help you!
The chloroplast is involved in both stages of photosynthesis. The light reactions take place in the thylakoid. There, water (H2O) is oxidized, and oxygen (O2) is released.
