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Home / Ap Biology Chapter 13 Reading Guide Answers

Ap Biology Chapter 13 Reading Guide Answers

one .

When comparison humans (or in Drosophila), are X-linked recessive traits observed more than frequently in males, in similar numbers between males and females, or more than frequently in females, or is the frequency different depending on the trait? Why?

  1. more frequently in males than females

  2. more frequently in females than males

  3. in males and females as

  4. in different distributions depending on the trait

2 .

Which recombination frequency corresponds to perfect linkage and violates the law of independent assortment?

  1. 0

  2. 0.25

  3. 0.l

  4. 0.75

three .

Which recombination frequency corresponds to independent assortment and the absence of linkage?

  1. 0

  2. 0.25

  3. 0.l

  4. 0.75

4 .

The illustration shows a Drosophila genetic map. The gene for aristae length occurs at 0 centimorgans, or cM. The gene for body color occurs at 48.5 cM. The gene for red versus cinnabar eye color occurs at 57.5 cM. The gene for wing length occurs at 65.5 cM, and the gene for red versus brown eye color occurs at 104.5 cM. One cM is equivalent to a recombination frequency of 0.01.

Based on the diagram, which of the following statements is true?

  1. Recombination of the trunk color and ruby-red/cinnabar eye alleles volition occur more frequently than recombination of the alleles for wing length and aristae length.

  2. Recombination of the body colour and aristae length alleles volition occur more than frequently than recombination of crimson/ brown eye alleles and the aristae length alleles.

  3. Recombination of the greyness/black body color and long/short aristae alleles will not occur.

  4. Recombination of the blood-red/brown eye and long/short aristae alleles will occur more often than recombination of the alleles for wing length and body color.

five .

Which of the post-obit codes describes position 12 on the long arm of chromosome xiii?

  1. 13p12

  2. 13q12

  3. 12p13

  4. 12q13

6 .

Presume a pericentric inversion occurred in one of two homologs prior to meiosis. The other homolog remains normal. During meiosis, what structure, if any, would these homologs assume in order to pair accurately forth their lengths?

  1. V formation

  2. cruciform

  3. a loop

  4. Pairing would not be possible.

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Source: https://openstax.org/books/biology-ap-courses/pages/13-review-questions