Giving 30 points away

look at the following plant cell. which of the choices below correctly identifies the names of the structures?

a. 1—cell wall; 2—cytoplasm
b. 1—plasma membrane; 2—vacuole
c. 1—cell wall; 2—chlorophyll
d. 1—plasma membrane; 2—nucleolus

Cattle with brown fur and cattle with white fur will produce a reddish roan calf . when examined closely, the calf show about an even number of brown hairs and white hairs that give a reddish appearance when viewed from far away. the fact that both the brown fur allele and the white fur allele are expressed equally in the offspring is an example of