« previous next »

Author Question: A genetic change that caused a certain Hox gene to be expressed along the tip of (Read 1013 times)

penguins

  • Hero Member
  • *****
  • Posts: 903
on: Jul 12, 2013
A genetic change that caused a certain Hox gene to be expressed along the tip of a vertebrate limb bud instead of farther back helped make possible the evolution of the tetrapod limb. This type of change is illustrative of
A) the influence of environment on development.
B) paedomorphosis.
C) a change in a developmental gene or its regulation that altered the spatial organization of body parts.
D) heterochrony.
E) gene duplication.


Millan

  • Sr. Member
  • ****
  • Posts: 368
Reply #1 on: Jul 13, 2013
I know it's C, we did this last week ;)


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question

penguins

  • Hero Member
  • *****
  • Posts: 903
Reply #2 on: Jul 18, 2013
Thank you, thank you!!


« previous next »
 

Did you know?

Adult head lice are gray, about ? inch long, and often have a tiny dot on their backs. A female can lay between 50 and 150 eggs within the several weeks that she is alive. They feed on human blood.

Did you know?

Vaccines prevent between 2.5 and 4 million deaths every year.

Did you know?

By definition, when a medication is administered intravenously, its bioavailability is 100%.

Did you know?

Looking at the sun may not only cause headache and distort your vision temporarily, but it can also cause permanent eye damage. Any exposure to sunlight adds to the cumulative effects of ultraviolet (UV) radiation on your eyes. UV exposure has been linked to eye disorders such as macular degeneration, solar retinitis, and corneal dystrophies.

Did you know?

Stevens-Johnson syndrome and Toxic Epidermal Necrolysis syndrome are life-threatening reactions that can result in death. Complications include permanent blindness, dry-eye syndrome, lung damage, photophobia, asthma, chronic obstructive pulmonary disease, permanent loss of nail beds, scarring of mucous membranes, arthritis, and chronic fatigue syndrome. Many patients' pores scar shut, causing them to retain heat.

Crossing Over Results in Genetic Recombination p2 Crossing Over Results in Genetic Recombination p2
Genetic Transformation Genetic Transformation
Inflammation of the oropharynx and petechiae (small red spots) on the soft palate caused by strep ... Inflammation of the oropharynx and petechiae (small red spots) on the soft palate caused by strep ...
Dolly, a Finn Dorset sheep cloned from the genetic material o Dolly, a Finn Dorset sheep cloned from the genetic material o
BIOLOGY GENE DESCRIPTION FOR ASSIGNEMNT BIOLOGY GENE DESCRIPTION FOR ASSIGNEMNT
Deletion mapping of the Drosophila Notch (n) gene Deletion mapping of the Drosophila Notch (n) gene
Video: Methods that regulate pH

For a complete list of videos, visit our video library