Reproductive isolation is 1. the exchange of genes between two different species

2. the ability to reproduce between species and produce offspring

3. the ability to reproduce offspring with similar appearance

4. the ability to reproduce only within a species

someone help please

each of the 46 original chromosomes splits into two daughter chromosomes, so there are two sets of 46 daughter chromosomes that end up in each cell. human cells have 46 chromosomes. each chromosome consists of a pair of identical chromatids attached together by a structure called a centromere.

the atmospheric gas that forms a mild acid when dissolved in water is called carbon dioxide. the correct answer is a. 2.) chemical weathering would cause an inscription on a marble headstone to become harder and harder to read over time.

answer; nociceptive pain;