A gardener planted two different varieties of black-eyed pea in her garden, one with black seeds and the other with white seeds.
She noticed that in the seeds of the F1 generation were mostly white. As an experiment, she deliberately pollinated the two varieties with the result that in the experimental F1, 100% were white. She cross-pollinated the F1 plants and got the following result:
Black seeded plants: 36
White seeded plants: 124
1. Use a chi-squared test to determine whether these results are consistent with the hypothesis that the white and black traits represent mendelian characters with white being dominant to black.
2. Does this result support the null hypothesis of simple dominance/recessiveness?
Black seeded plants: 36
White seeded plants: 124
1. Use a chi-squared test to determine whether these results are consistent with the hypothesis that the white and black traits represent mendelian characters with white being dominant to black.
2. Does this result support the null hypothesis of simple dominance/recessiveness?
1 answer:
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When a cell undergoing cellular division identifies that a chromosome misalignment had taken place the cell cycle stops until the error it's corrected.
Option two of the question states that the cell cycle will <u>proceed uncontrollably, this is not the case for the error at hand</u>. Although this can be a problem for cells and leads to the appearance of cancer, it is not caused by chromosome misalignment. As is the case with options 3 and 4.
The stop or delay in the <u>cell cycle is what normally takes place in these situations.</u> This stoppage is done by the <em><u>spindle checkpoint</u></em>, which prevents <u>duplicate chromosomes from separating.</u>
During this time, the error it's corrected. If a cell is not able to correct the error at this time, many situations can follow. <u>However, the most likely is that the cell will undergo a <em>programmed cellular death.</em> </u>
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