Approximately what fraction of offspring from this cross will have yellow legs? Choose 1 answer: (A) A (1)/(4) (B) B (1)/(2) C (3)/(4) D (4)/(4)

To determine the fraction of offspring that will have yellow legs from the given cross, we need to understand the genetic inheritance pattern involved. Assuming that yellow legs are a dominant trait (Y) and normal legs are recessive (y), we can use a Punnett square to visualize the possible outcomes of the cross.<br /><br />Let's assume the cross is between two heterozygous parents (Yy x Yy). The Punnett square would look like this:<br /><br />```<br /> Y y<br /> ----------------<br />Y | YY | Yy |<br /> ----------------<br />y | Yy | yy |<br /> ----------------<br />```<br /><br />From the Punnett square, we can see the following possible genotypes for the offspring:<br />- YY (yellow legs)<br />- Yy (yellow legs)<br />- Yy (yellow legs)<br />- yy (normal legs)<br /><br />Out of the four possible outcomes, three result in yellow legs (YY, Yy, Yy) and one results in normal legs (yy).<br /><br />Therefore, the fraction of offspring with yellow legs is 3 out of 4, or $\frac{3}{4}$.<br /><br />So, the correct answer is:<br />(C) $\frac{3}{4}$