« previous next »

Author Question: Unequal crossing over during prophase I can result in one sister chromosome with (Read 779 times)

theo

  • Hero Member
  • *****
  • Posts: 698
on: Jul 5, 2013
Unequal crossing over during prophase I can result in one sister chromosome with a deletion and another with a duplication. A mutated form of hemoglobin, known as hemoglobin Lepore, is known in the human population. Hemoglobin Lepore has a deleted set of amino acids. If it was caused by unequal crossing over, what would be an expected consequence?
A) If it is still maintained in the human population, hemoglobin Lepore must be selected for in evolution.
B) There should also be persons born with, if not living long lives with, an anti-Lepore mutation or duplication.
C) Each of the genes in the hemoglobin gene family must show the same deletion.
D) The deleted gene must have undergone exon shuffling.
E) The deleted region must be located in a different area of the individual's genome.


Millan

  • Sr. Member
  • ****
  • Posts: 368
Reply #1 on: Jul 5, 2013
Hi

B is the answer ;)


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question

theo

  • Hero Member
  • *****
  • Posts: 698
Reply #2 on: Aug 10, 2013
Wow, awesome :D


« previous next »
 

Did you know?

Pink eye is a term that refers to conjunctivitis, which is inflammation of the thin, clear membrane (conjunctiva) over the white part of the eye (sclera). It may be triggered by a virus, bacteria, or foreign body in the eye. Antibiotic eye drops alleviate bacterial conjunctivitis, and antihistamine allergy pills or eye drops help control allergic conjunctivitis symptoms.

Did you know?

When Gabriel Fahrenheit invented the first mercury thermometer, he called "zero degrees" the lowest temperature he was able to attain with a mixture of ice and salt. For the upper point of his scale, he used 96°, which he measured as normal human body temperature (we know it to be 98.6° today because of more accurate thermometers).

Did you know?

Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.

Did you know?

The term pharmacology is derived from the Greek words pharmakon("claim, medicine, poison, or remedy") and logos ("study").

Did you know?

Women are two-thirds more likely than men to develop irritable bowel syndrome. This may be attributable to hormonal changes related to their menstrual cycles.

An example showing a modification that has occurred as a result of biological evolution An example showing a modification that has occurred as a result of biological evolution
Types of changes in chromosome structure Types of changes in chromosome structure
Guttation, the result of root pressure. Guttation, the result of root pressure.
DNA Packaged as Chromosome DNA Packaged as Chromosome
The DNA from one chromosome has a mass of ~20 billion Daltons The DNA from one chromosome has a mass of ~20 billion Daltons
Photograph of a puff within a polytene chromosome Photograph of a puff within a polytene chromosome
Video: Body plan of euglena Animation

For a complete list of videos, visit our video library