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
andrey2020 [161]
3 years ago
11

A molecule that can be used as a molecular clock has a neutral mutation rate of one mutation per 10 million years. How many year

s ago did two species share a common ancestor if the molecules found in these two species differ by a total of six mutations?
A. 6 million years
B. 10 million years
C. 30 million years
D. 60 million years
Biology
2 answers:
kotegsom [21]3 years ago
8 0
I could be wrong but I think the answer is D
Karo-lina-s [1.5K]3 years ago
4 0

Answer:

C: 30 million years

Explanation:

Six different things means three on each side

You might be interested in
According to the competitive exclusion principle, two species cannot continue to occupy the same A) habitat. B) niche. C) territ
levacccp [35]

Answer:

Niche

Explanation:

Niche basically is the lifelihood of a species that involves feeding on what, drinking from what....

If both species are competing for the same resources, they would compete until a certain species is eradicated. (think of it as 2 species of ants in 2 colonies that are close to each other, take the same leaves, prey and stuff. They would fight with each other in other until one colony is eradicated.) hence, unless a species and adapt and change its niche, both species would fight until one is eliminated. Thus, the principle states that 2 species cannot continue to occupy the same niche, not living environment.

6 0
3 years ago
Read 2 more answers
Which of these brain structures is believed to play a role in judging whether external stimuli offers threats or rewards?
dexar [7]
The answer to this is amygdala
5 0
3 years ago
Read 2 more answers
Individuals producing an abnormal form of the extracellular matrix protein, fibrillin, is a result of ______.
erastova [34]

Answer:

Indivisuals with producing an abnormal form of extracellular protein fibrillin are suffering from Marfan syndrome ehich is caused by genetic mutation in the FBN1 gene.

Explanation:

Gene mutations in FBN1 gene results in the production of an abnormal extracellular matrix fibrillin-1 protein that cannot function properly. These gene mutations basically reduce the amount of fibrillin-1 produced by the cell, alter the structure of fibrillin-1, or causes the impairment of the transport of fibrillin-1 out of the cell.

As a result, protein is poorly incorporated into extracellular matrix. Hence, indivisuals with Marfan syndrome present following symptoms

Tall stature.

Disproportionately long arms, legs and fingers.

Sternum either protrudes outward or dips inward.

Arched palate and crowded teeth.

Heart murmurs.

Extreme nearsightedness.

6 0
3 years ago
There are more species in tropical areas than in places more distant from the equator. this is probably a result of _____.
slega [8]
The temperature of tropical areas relative to places more distant to the equator. Another reason why is higher nutrient cycling, which is also an effect of higher temperature.
8 0
3 years ago
Both myoglobin and hemoglobin exhibit cooperative binding to oxygen. True or False
lys-0071 [83]

Answer:

False.

Explanation:

An Haemoglobin molecule  is made up of 4-polypeptides, with each of the polypeptide chain containing an haem group. These haem group can bind with one oxygen atom each.

T<u>he binding of the first oxygen atom  by the first haem group weakens the tertiary protein   structure  of  Quaternary structure  Hb, thus it makes it easier for the second Oxygen atom to bind faster, and the 3rd oxygen very fast and the 4th oxygen atom the fastest.These accelerated binding of the oxygen atoms, facilitated by the first binding O2, is called cooperative binding.It aids oxygen binding capacity and tranport functions  of Hb,</u>

<u />

<u>Myoglobin is an oxygen storage protein in  muscles, and not oxygen carrying molecule, It releases  stored O2 only in condition of low oxygen supply</u>.It has   one haem group in its molecule.Therefore its structural features can  not  carry out  cooperative binding.

6 0
3 years ago
Other questions:
  • In which state was less than 50 billion tons of coal mined in 2005?
    13·1 answer
  • The suffix -plasm means
    14·1 answer
  • Which is an example of a response to a stimulus
    12·1 answer
  • Why would the structures of organism look so differently even though they come from common ancestors
    12·1 answer
  • Fungi are either or .
    14·2 answers
  • You are awaiting the white blood cell differential results for a patient who presented with a ruptured appendix and peritonitis.
    12·1 answer
  • How do different cells in the body keep you alive?
    12·1 answer
  • a student does an experiment for a science fair to study whether temperature affects the timing of crickets chirpthe student kee
    11·1 answer
  • The carbon cycle ensures that carbon is not lost. which is another important benefit of the carbon cycle.
    14·1 answer
  • IF most of the energy we use on earth comes from the sun –how does that energy (light and thermal) end up
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!