The allele for a widowís peak has complete dominance over the allele for a straight hairline (w). what is the probability of two parents heterozygous for a widowís peak (ww) having an offspring with a widowís peak?
75 percent
50 percent
0 percent
25 percent

=

i believe it is "they are not used up by reactions" as the answer to your question, text me back if this is correct because i just learned this.

a. seed plant structure. 1. the three main plant organs are roots, stems, and leaves. a fourth kind of tissue, meristematic tissue, is responsible for plant growth. meristematic tissue is the only plant tissue that produces new cells by mitosis. plants can lose water out of their leaves as they exchange gases with the air

explanation: