Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN: 9780134580999
Author: Elaine N. Marieb, Katja N. Hoehn
Publisher: PEARSON
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15. what is The ratio of the observed number of double recombinants to the number of double recombinants expected to occur?
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- Which of these changes in chromosome structure alter the total amount of genetic material?arrow_forward4. Draw a diagram clearly showing how intragenic recombination can take an individual who is cc and produce gametes that are dominant C phenotype.arrow_forward1.Describe the rearrangement in chromosomes A-C. indicate the specific markers genes flanking the crossover/breakage points (e.g., a translocation with breakpoints between markers X and Z). 2.Chromosome rearrangements can be caused by crossing over between repetitive DNA sequences. Draw a picture similar to Figure showing how crossovers between repetitive sequences could have produced chromosome rearrangement A. indicate the location and orientation of the repetitive DNA segments relative to the marker genes.arrow_forward
- 6.6 Describe crossing over. Explain how it is related to recombinationarrow_forward11. The discovery of chromosome banding in eukaryotes has greatly improved our ability to distinguish various cytogenetic events. Particularly useful are “banding" polymorphisms because the "morphs" can be used as chromosome markers. (These morphs are forms of chromosome that are cytologically distinguishable by virtue of minor variations in band size, position, etc). Let's consider chromosome 21 in humans. Assume that one set of parents are: 21°21 (female) x 21°21ª (male), where a, b, c and d represent "morphs" of a polymorphism for this chromosome. In each case: State the genetic term for the condition (if possible), diagram the event(s) that gave rise to the condition, and state in which individual the event(s) took place. d. 42A + 2121°21° + XX dad MII Interphase [show condensed]: Interphase [show condensed]: Diagram meiosis for After DNA replication: After DNA replication: chromosome 21 in Mom (left) and Dad (right) After Meiosis I: After Meiosis I: Gametes: Gametes: 21 21 21°arrow_forward18. This question refers to the following schematic diagram of two normal chromosomes and five aberrant forms (A through E) of those chromosomes. (Circles represent centromeres and letters represent genetic loci). Which of the aberrant forms represents duplication? Normal Chromosomes (A) (B) | (D) (E)arrow_forward
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