Answer: Traits acquired during a lifetime are passed to offspring.
Answer: D). Uterus
Explanation: Fertilization occurs in the fallopian tube. Fertilization is the fusion of a sperm and an egg to form a zygote. The zygote moves down the fallopian tube to the uterus where it gets embedded into the wall of the uterus. Its attachment to the uterine wall enables the embryo to develop. If the embryo fails to attach itself to the wall of the uterus, the pregnancy will be aborted.
Answer:
Muscle cells, especially heart muscle cells and fat cells have the most mitochondria in the human body.
Explanation:
Mitochondria, the powerhouse of the cell is an organelle where cellular respiration occurs. They supply energy to the cells for their functioning. The number of mitochondria in a cell vary depending on the energy requirement of that cell.
Muscle cells are very active in our body and need energy for the movement. Heart muscle cells require a lot of energy to contract and pump blood through the circulatory system all the time. So they have a lot of mitochondria to produce a vast amount of energy they need.
I think the correct answer from the choices listed above is option A. When crossing-over takes place, chromosomes exchange corresponding segments of DNA. Corresponding genes on non-sister chromatids are exchanged at chiasmata. Hope this answers the question.
The answer is <span>B.) Both flies belong to the same genus but different species.
Species is a group of similar organisms able to reproduce (to exchange genes and interbreed) only within the group. That means that organisms from different species could not exchange genes. So, if two similar flies are no able to mate, it can be concluded that they are not the same species. Still, they are similar enough to belong to the same genus, but different species.</span>
