« previous next »

Author Question: Unequal crossing over during prophase I can result in one sister chromosome with (Read 772 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?

Patients who cannot swallow may receive nutrition via a parenteral route—usually, a catheter is inserted through the chest into a large vein going into the heart.

Did you know?

The heart is located in the center of the chest, with part of it tipped slightly so that it taps against the left side of the chest.

Did you know?

All patients with hyperparathyroidism will develop osteoporosis. The parathyroid glands maintain blood calcium within the normal range. All patients with this disease will continue to lose calcium from their bones every day, and there is no way to prevent the development of osteoporosis as a result.

Did you know?

Once thought to have neurofibromatosis, Joseph Merrick (also known as "the elephant man") is now, in retrospect, thought by clinical experts to have had Proteus syndrome. This endocrine disease causes continued and abnormal growth of the bones, muscles, skin, and so on and can become completely debilitating with severe deformities occurring anywhere on the body.

Did you know?

Eating food that has been cooked with poppy seeds may cause you to fail a drug screening test, because the seeds contain enough opiate alkaloids to register as a positive.

Chromosome territories in the cell nucleus Chromosome territories in the cell nucleus
X chromosome inactivation in female mammals produces the Barr Body. X chromosome inactivation in female mammals produces the Barr Body.
The generation of various recombinants by crossing over in different regions The generation of various recombinants by crossing over in different regions
Prophase Prophase
OraQuick. A negative result would show a red line at the "C" mark, whereas a positive ... OraQuick. A negative result would show a red line at the "C" mark, whereas a positive ...
A karyotype shows this child has three copies of chromosome 21. A karyotype shows this child has three copies of chromosome 21.
Video: Exocytosis - secretion

For a complete list of videos, visit our video library