La proporción genotipo del siguiente cruce Hh Dd x HH dd es a. HH Dd 4/16 - HH dd 4/16 - Hh Dd 4/16 - Hh dd 4/16

b. HH Dd 16/8 - Hh Dd 16/8

c. HH Dd 5/16 - HH dd 3/16 - Hh Dd 5/16 - Hh dd 3/16

d. HH dd 9/16 - Hh Dd 5/16 - Hh dd 2/16

children tend to take more after their grandparents more than their parents. it’s the dna you received that was passed down to you somewhere in your family. maybe one of your grandparents had/has straight hair and you might have gotten it from them.

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.