1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Trava [24]
3 years ago
15

What is a Barr body, and where is it found in a cell? b) Define the Lyon hypothesis.

Biology
1 answer:
rewona [7]3 years ago
5 0

Answer:

Barr body may be defined as the one of the inactive X chromsome of the human female. The human female consists of XX chromosome whereas XY in male. To compensate the extra X chromosome in female one of the X chromosome become inactive and known as barr body. The barr body is found in the somatic  cells.

Lyon hypothesis:

Lyon hypothesis states that dosage compensation occur in human females by the random inactivation of one of the X chromosome. The inactivated X chromosome is named as barr body. The lyon hypothesis was given by Mary Lyon.

You might be interested in
In the beginning of prophase the DNA coils back up and​
Oksi-84 [34.3K]

Answer:

Cells duplicate and condense their DNA prior to entering mitosis. ... Early microscopists were the first to observe these structures, and they also noted the ... forms of chromosomes leading up to and during cytokinesis, the ultimate division of one ... condensin forms rings that coil the chromosomes into highly compact forms.

Explanation:

5 0
3 years ago
Read 2 more answers
7. Microscopes that view slides are called ____________________ because the use _______________ lenses.
Nutka1998 [239]

Answer:

compound light microscope, optical

Explanation:

4 0
3 years ago
How might cancer stem cells originate ?
OLga [1]
This figure illustrates 3 hypotheses of how a cancer stem cell may arise: (1) A stem cell undergoes a mutation, (2) A progenitor cell undergoes two or more mutations, or (3) A fully differentiated cell undergoes several mutations that drive it back to a stem-like state.
8 0
3 years ago
What is one difference between monocot and dicot plants?
denis-greek [22]
Monocots only have one cotyledon (vein) dicots have two
7 0
3 years ago
Which fossil fuel is used to produce gasoline, jet fuel, diesel and plastics? it’s oil right?
V125BC [204]

Answer:

Crude Oil/Petroleum

Explanation:

Crude oil is a very versatile fuel and is used to produce things like plastics, artificial food flavorings, heating oil, petrol, diesel, jet fuel, and propane.

7 0
3 years ago
Read 2 more answers
Other questions:
  • What are the 3 basic components of a nucleic acid
    11·1 answer
  • What is the probability that the daughter of an unaffected father and a mother who is a carrier for the dmd gene is affected by
    14·1 answer
  • What is a possible eDuring exercise, sensory receptors detect changes in oxygen and carbon dioxide levels in the blood. This inf
    6·1 answer
  • How fast can a turbidite bed form?
    5·2 answers
  • (Reproduction in Plants...) <br>any one con explain<br>​
    10·1 answer
  • Cells that are needed to make a lot of protein are expected to have a Large number of
    13·1 answer
  • Explain why the body of a person infected with HIV, the virus that causes AIDS, would have a different immune response to the pr
    11·1 answer
  • How many valence electrons do elements in group 14 have
    12·1 answer
  • TRUE OR FALSE: Paramecium can both photosynthesize and take in food through phagocytosis.
    11·2 answers
  • Compare and contrast the nutritional mode of a fungus with your own nutritional mode.
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!