« previous next »

Author Question: In comparing the genomes of humans and those of other higher primates, it is see (Read 890 times)

theo

  • Hero Member
  • *****
  • Posts: 698
on: Jul 5, 2013
In comparing the genomes of humans and those of other higher primates, it is seen that humans have a large metacentric pair we call chromosome 2 among our 46 chromosomes, whereas the other primates of this group have 48 chromosomes and any pair like the human chromosome 2 pair is not present; instead, the primate groups each have two pairs of midsize acrocentric chromosomes. What is the most likely explanation?
A) The ancestral organism had 48 chromosomes and at some point a centric fusion event occurred and provided some selective advantage.
B) The ancestral organism had 46 chromosomes, but primates evolved when one of the pairs broke in half.
C) At some point in evolution, human ancestors and primate ancestors were able to mate and produce fertile offspring, making a new species.
D) Chromosome breakage results in additional centromeres being made in order for meiosis to proceed successfully.
E) Transposable elements transferred significantly large segments of the chromosomes to new locations.


Millan

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

A 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?

The toxic levels for lithium carbonate are close to the therapeutic levels. Signs of toxicity include fine hand tremor, polyuria, mild thirst, nausea, general discomfort, diarrhea, vomiting, drowsiness, muscular weakness, lack of coordination, ataxia, giddiness, tinnitus, and blurred vision.

Did you know?

To prove that stomach ulcers were caused by bacteria and not by stress, a researcher consumed an entire laboratory beaker full of bacterial culture. After this, he did indeed develop stomach ulcers, and won the Nobel Prize for his discovery.

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?

During the twentieth century, a variant of the metric system was used in Russia and France in which the base unit of mass was the tonne. Instead of kilograms, this system used millitonnes (mt).

Did you know?

Historic treatments for rheumatoid arthritis have included gold salts, acupuncture, a diet consisting of apples or rhubarb, nutmeg, nettles, bee venom, bracelets made of copper, prayer, rest, tooth extractions, fasting, honey, vitamins, insulin, snow collected on Christmas, magnets, and electric convulsion therapy.

Prenatal development in humans. Prenatal development in humans.
mouse genomes mouse genomes
The thorax of apes, including humans, is broad but shallow in contrast to the narrower, deeper chest The thorax of apes, including humans, is broad but shallow in contrast to the narrower, deeper chest
Autoimmune disease in primates Autoimmune disease in primates
When parents actively support higher education, their children achieve more in their future careers. When parents actively support higher education, their children achieve more in their future careers.
Comparison of four Saccharomyces genomes Comparison of four Saccharomyces genomes
Video: Import of Dietary Glucose from Intestines to Bloodstream

For a complete list of videos, visit our video library