Please write out the problem you are specifying <span />
Answer:
Hi, there your answer is D.Crossing Over
Hope This Helps
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Explanation:
<span>Three months after fertilization and development of a placenta around the developing fetus, the corpus luteum regresses and forms the corpus albicans.</span> Formed placenta takes over progesterone production (which was the role of corpus luteum) and the corpus luteum degrades into a corpus albicans. The corpus luteum is being broken down by macrophages, in a process called luteolysis. The remains of the corpus albicans may persist as a scar on the ovary.
Answer:
You'd want to examine homologous structures in fossil remains. This can give a geologic time scale of evolution within certain fossil groups. ... Fossil evidence can give a general timeline for the common ancestor or origin or homologous structures as well as how they have changed since then.
Explanation:
