The allele for black hair (B) is dominant to the allele for white hair (b) in guinea pigs. Assume that a true-bred black hair guinea pig is crossed with a true-bred white hair guinea pig. Use a Punnett square to predict the genotypic and phenotypic ratios of the F1 generation. (6 marks) * You do not need to write a let statement hel

the electromagnetic energy from the sun arrives in the form of visible and invisible light.

many other transport proteins, often called pumps, move materials against a concentration gradient. active transport drives molecules across a membrane from a region of lower concentration to a region of higher concentration. this process, shown in figure 5.1, uses transport proteins powered by chemi- cal energy.

1. b.

2. d.

3. a.

5. d.

6. c.

these are the only ones that i know, i hope this , and good luck.