Question

. A tribble with short whiskers is crossed with a tribble with no whiskers and half of the offspring have no whiskers. (Set this problem up like a blood type problem)

Answer 1

The question involves a genetic cross, where short whiskers are dominant (W) and no whiskers are recessive (w). A heterozygous short-whiskered tribble (Ww) crossed with a no-whiskered tribble (ww) will yield half of the offspring with no whiskers. A Punnett square explains the outcome.

Step-by-step explanation:

The crossing of tribbles mentioned in the question is a genetic problem in biology that involves understanding the inheritance patterns of whisker length in tribbles. We can assume that short whiskers (W) are a dominant trait over no whiskers (w). A Punnett square can help visualize the genetic crosses of the parent tribbles. Given that half of the offspring have no whiskers, it suggests that the parent with short whiskers is heterozygous (Ww) and the parent with no whiskers is homozygous recessive (ww).

To set up the cross:

1. Determine the genotypes of the parents: short whiskers (Ww), no whiskers (ww).
2. Set up the Punnett square with one parent's alleles on the top and the other on the side.
3. Fill in the Punnett square to show all possible genotypes of the offspring.

The resulting Punnett square would look like this:

W w
w Ww ww
w Ww ww

According to this Punnett square, half of the offspring (Ww and ww) will have no whiskers, which aligns with the given information.