Crossing over occurs in prophase of meiosis 1 crissing over results in
a) new combinations of genes on a chromosome
b) genetically identical homorogous chromosome
c)double the number of original chromosome
d) half the number of original chromosome

Waianapanapa beach in hawaii is a black-sand beach that was formed by waves crashing against volcanic rock. the sand can be very hot on sunny days. which statement best explains why? o a. the black sand has no heat capacity. b. the black sand absorbs no radiation. o c. the black sand is immune to insolation. d. the black sand has a low albedo.

What are two ways that harvesting algae from the ocean may benefit human society? how might the harvest of algae negatively impact the ocean communities where that algae grows? how could this be prevented?

Which is one example of a phenotypic change that is not genetic