study questions 18

study questions 18 - Study questions 18 (Most of these...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
Study questions 18 (Most of these questions are from past Intro Biology exams) Aphids have both a sexual and a clonal life cycle. During clonal reproduction a mother aphid forms progeny through embryogenesis of somatic cells, i.e. of non-zygotic cells, in a process called "parthenogenesis". The following questions pertain to this process. 1. The genotype of the "mother" at the "K" locus is Kk. The most likely genotype of 20 individu- als produced through "parthenogenesis" is: a. all Kk b. 12 KK, 8 Kk c. 5 kk, 5 KK,10 Kk d. 12 Kk, 8 KK e. 15 kk, 4 Kk, 1 KK 2. The genotype of the "mother" at the "K" locus is Kk. The most likely genotype of 20 individu- als produced through sexual processes: a. all Kk b. 12 KK, 8 Kk c. 5 kk, 5 KK,10 Kk d. 12 Kk, 8 KK e. 15 kk, 4 Kk, 1 KK 3. Some aphid species only reproduce through parthenogenesis while others form sexual zygotes and embryos. Muller's ratchet impact and type of effect on aphids is best described by the fol- lowing (6 pt): answer effect on zygotic aphid species effect on parthenogenic aphid species effect depends on a strong and negative light or none suppressing crossing over formation b medium and negative medium and positive failure to import proteins in nucleus c light or none strong and negative accumulation of mutations d light or none strong and positive favoring crossing over formation e strong and positive light or none improved protein secretion - 1 -
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
The image shows two cells of the same organism. Based on your understanding of the cell cycle, answer the questions below.
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 06/07/2009 for the course BIS BIS2A taught by Professor Lucacomai during the Spring '09 term at UC Davis.

Page1 / 7

study questions 18 - Study questions 18 (Most of these...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online