True.
Epinephrine and norepinephrine are released as fight/flight response hormones when the body is under extreme stress.
Cortisol is released in response to stress too.
Answer:
Humans affect the environment in positive and negative ways. Cutting down trees and littering have a negative effect on animals and plants. Protecting endangered species and cleaning lakes and seas has a positive effect on the environment.
Answer:
2)chiasmata hold chromosomes together.
Explanation:
Chiasma (pl. Chiasmata): it is the point of contact, the physical union between two non-sister chromatids that belong to homologous chromosomes. In a given chiasma, an exchange of genetic material can occur between both chromatids.
1) is FALSE becasue recombination occurs between chromatids of homologous chromosomes, NOT between sister chromatids.
3) is FALSE because more than one recombination event can occur in a given pair of homologous chromosomes.
4) is FALSE becasue synaptonemal complex keeps homologous chromosomes together, NOT sister chromatids. Additionally, recombination occurs in prophase 1, long before anaphase 2.
Answer:
DNA?
I'm guessing the boys who look the same are twins, since there's no photo of them..
Hope this helps
