Explanation:
DNA makes up the chromosomes which is divided into cells during mitosis. Chromosome and the DNA within are coded to give cells a specialized purpose. These cells are then used to help the organism live and carry out everyday functions.
DNA is given to said organism by the parent(s). Chromosomes are DNA strands condensed into a small package. While the DNA is constantly being reproduced the cells are too. The chromosomes are divided in the mitosis process. Remember the acronym PMAT. Prophase which the cell's nuclear envelope dissolves. Metaphase which the chromosomes line up in the middle of the cell. Anaphase which the spindle fibers attach to the sister chromatids and pull them to each side. Telophase which the nuclear envelope reappears and the cell is ready to split into the daughter cells.
If this does not answer your question please comment and refine your question a little more.
Answer:
A. The two proteins are very likely related evolutionarily.
B. The differences in the sequences in many instances represent a conservative change (such as L for I).
Explanation:
A. Humans and sperm whales are vertebrates and mammals, this implies that they have a common ancestor a long time ago, which makes them evolutionary related.
B. Conservation indicates that a sequence has been maintained by natural selection. This means that protein structure is not exactly the same but is quite similar.
Options C and D, contradict the above explanation, and they make no sense because sperm whales and humans share a common ancestor (mya).
Mendel wants to control the pollination of his pea plants because traits were not blended but they remain separate in the subsequent generations and also it is contrary to scientific opinion during his time
<u>Explanation:</u>
- Mainly, he wants to control because they were against the scientific opinion during his time.
- Mendel takes a pea plant for his experiment because it can be easily observable.
- Pea plant has seven traits and it can be pollinated by both the ways. One is self-pollination and the other is cross-pollination.
- Mendel did not know about the genes but he speculates the factors of formation in the traits.
- Mendel produces three laws, the law of dominance, the law of segregation, the law of independent assortment.