In deer mice, red eyes (r) is recessive to normal black eyes (r). two mice with black eyes are crossed. they produce two offspring, one with red eyes and one with black eyes. give the genotypes of parents and offspring of this cross.

You are working in the lab and are working with the same element but with varying isotopes of the element. you are working with c-11, c-13, c-14, and c-15. what is the average atomic mass of this element? (use periodic table) a- 12 b-15 c-14 d-13