During meiosis, the process of crossing over results in new combinations of alleles because.. genetic material is added by a third chromosome during this process. genetic material is removed during this process. genetic material is exchanged between chromosomes during this process. genetic material always mutates randomly during this process.

Facilitates growth and change in neurons and the migration of neurons to different sites in the brain

The embryos of a bird, a reptile, and a mammal are similar in appearance. how does comparing the physical appearance of embryos of different species support the theory of evolution? a. it shows that these organisms share a common ancestor. b. it provides evidence that these organisms eat the same foods.c. it shows that these organisms share the same habitat.d. it provides evidence that these organisms suffered a genetic mutation.

What are ways that ordinary people can to keep antibiotic resistance from getting worse?