Which best explains what happens during crossing over?

A. The chromosomes have electrical connections that allow them to line up randomly.
B. Paired chromosomes overlap and portions of DNA switch between chromosome.
C. Genetic material is switched because the chromosomes line up independently.
D. Chromosomes line up randomly and cross genetic information between unpaired chromosomes.

What is the equation of the following graph in vertex form? parabolic function going down from the left through the point zero comma twelve and through the point two comma zero and turning at the point four comma negative four and going up through the point six comma zero and continuing towards infinity courtesy of texas instruments a: y = (x − 4)2 − 4 b: y = (x + 4)2 − 4 c: y = (x + 2)2 + 6 d: y = (x + 2)2 + 12

Aboat's value over time is given as the function f(x) and graphed below. use a(x) = 400(b)x + 0 as the parent function. which graph shows the boat's value increasing at a rate of 25% per year?

Solve for x -2.3(r - 1.2 ) = -9.66 enter you answer as decimal.