The path of migration of primordial germ cells (PGCs) is an example of . In zebrafish embryos, the PGCs follow the gradient of by expressing the receptor. Fill in the blanks with the best answers.

Whay is the following best defines climate

Which of the following terms best matches this definition: the process where humans choose the traits that will be present in the next generation through breeding. question 4 options: genetic determinism artificial selection acquired selection natural selection

The process of meiosis produces only gametes, eggs or sperm. according to the diagram, how many sperm are formed from each cell that undergoes meiosis?