Answer:
Four conditions are needed for natural selection to occur: reproduction, heredity, variation in fitness or organisms, variation in individual characters among members of the population. If they are met, natural selection automatically results.
Explanation:
Evolution, in genetic terms, involves a change in the frequency of alleles in a population over time. What are the sources of genetic variation? Three sources of genetic variation are mutation, genetic recombination during sexual reproduction and lateral gene transfer.
Answer:
B. Primary spermatocytes
Explanation:
The germ cell line is a group of cells found inside the seminiferous tubules. This germ cells undergo mitosis (creating spermatogonia) to have a steady supply of cells that will divide by meiosis to produce gametes. When spermatogonia divide by meiosis at the end of meiosis I the newly created cells are known as primary spermatocytes.
Answer: Determinate growth
Explanation:
determinate growth stops when a plant element (such as a leaf) reaches a particular size.
<span>Body cell mutations cannot be passed on to offspring. This is because body cells do not contribute genetic material to SEX CELLS. C is your answer</span>
Answer:
Warming leads to longer life spans for the animals because none die due to exposure to the cold.
Explanation:
