Why does the genetic distance of 1cM not always correspond with the physical distance of 1 million bases?
What will be an ideal response?
Answer: The rate of recombination is not standardized along the length of the DNA with some areas being more “recombination silent” and others being “hot spots of recombination”.
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Reductive dechlorination is important in the breakdown of chlorinated xenobiotics because
A) anoxic conditions develop rapidly in polluted habitats. B) oxygen is not present in most soils. C) aerobic breakdown of xenobiotics is not possible. D) only cometabolism occurs aerobically.
Which of the following statements regarding Campylobacter infection is incorrect?
A. It can lead to Guillain-Barre syndrome. B. It can cause acute temporary paralysis. C. Campylobacter burrows into the mucosa of the ileum and multiplies. D. It can last over 2 weeks. E. It is caused by a shiga toxin.
As the trees in England become less sooty due to pollution controls on factories, which of the moths in the
accompanying figure will be selected against? a. The dark moth on the dark tree b. The light moth on the light tree c. All of the light moths equally d. The dark moth on the light tree e. All of the dark moths equally
When Mendel crossed tall (Tt) plants with tall (Tt) plants the offspring
a) did not grow and reproduce. b) were always short. c) were always tall. d) were always medium height. e) were mostly tall individuals and a few short individuals.