Answer:
When recombination occurs during meiosis, the cell's homologous chromosomes line up extremely close to one another. Then, the DNA strand within each chromosome breaks in the exact same location, leaving two free ends. Each end then crosses over into the other chromosome and forms a connection called a chiasma.
Explanation:
which increases the rate of speciation?
A.Asexual
B.Higher gene flow
C. Easy immigration
<u>D.Niche availability</u>
I believe the answer is B. They were no longer able to acquire the necessary characteristics for survival in a changing environment. I think it is B. because trilobites mostly went extinct because of the event that wiped out 95% of Earth's species. So they didn't have the characteristics to survive. Hope I helped!
Acidity is determined using a pH indicator
Answer:
B is oldest because it is at the bottom which entails that it is the oldest.
Explanation:
