Punnett Square Questions and Answers (Q&A)

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The "correct" answer isn't right because the only possible outcomes of Yy and yy is Yy and yy... there is no possible way the offspring could be purebred... only heterozygous or white

5 Answers

This kind of gene inheritance is known as codominance. The black chickens are all black because that’s the only gene they have for feather coloring. Same with the white chickens. However, their offspring have one black gene and one white gene. These genes have more or less become one gene...Read More

4 Answers

Correct answer is option B – 25%
The chance that the child will have sickle cell anemia if Tracy’s parents have another child is 25%.
It is important to note that the chance of passing on a genetic condition applies equally to each pregnancy. Since one of their chi...
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4 Answers

The answer should be dominant. Both red parents are Rr where R is red and r is white. In such a cross, 3/4s of offspring are expected to be red and 1/4 white.

3 Answers

How can it be Bb when homozygous means either the lower case is BB or bb. But in the problem it also says recessive. So can someone please explain to me what and how theanswer is Bb instead if bb.

3 Answers

The best answer to this is letter A. it is already a known fact that A will dominate a when it comes to the color of the peas. B that stands for smooth will definitely overpower b that stands for rough. Based on the table, all of the F1 offspring will be AaBb. This means that they will be green...Read More

2 Answers

The DNA is a two strand molecule. It is designed in a manner such that one part comes from the mother and the other from the father. Each piece is corresponding to the other, so, basically, each gene has two modifications. One is from the father and one from the mother. Now, if one of these...Read More

2 Answers

If they were codominant then all the flowers would be pink (RR crosses with WW, but both are red so if they were codominant RR crosses RR producing all RR), this answer is incorrect. The answer should be that the red allelle is dominant since most of the flowers were red (XX and Xx) the...Read More

2 Answers

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