The evolution of sexual reproduction is a great puzzle in modern evolutionary biology. Many groups of eukaryotic organisms, especially most animals and plants, reproduce sexually. The evolution of sex between two organisms of the same species contains two related but different themes: its origin and its maintenance. However, since hypotheses for the origin of sex are difficult to test experimentally, most of the current work has focused on the maintenance of sexual reproduction. Biologists, including W. D. Hamilton, Alexei Kondrashov, and George C. Williams, have proposed various explanations for how sexual reproduction is maintained in a large set of different living things.
Compared to early hominid ancestors, modern humans have jaws that are smaller and less rounded. I think this is what you're asking so I hope this helped you!
Answer:
C) The mass of the nitrogen atoms in the reactants is equal to the mass of the nitrogen atoms in the products.
Explanation:
In a closed system, the mass of reactant is always equal to the mass of products.
Answer:
the red fox has 38 chromosomes,
Explanation: