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
cupoosta [38]
3 years ago
7

Which of these best describes genetic drift? A) The movement of alleles between population B) Random fluctuations in the gene fr

equencies within a population Eliminate C) A planned method to reduce the number of inferior genes in a population D) The combining of alleles to create more genetic variations within a population
Biology
1 answer:
exis [7]3 years ago
6 0
The correct answer is B.
Genetic drift is one of the four evolutionary mechanisms. It changes the frequency by chance, aka at random.
For example. if you have 100 frogs in the population, 20 red, 20 green and 60 yellow, not all of the alleles are going to be passed down to the next generation because a portion of the population can be affected by a random event such as the flood. So, if the flood accidentally kills 20 red frogs, none of the offspring are going to be red by chance.
You might be interested in
Need help please help
Anna35 [415]
The answer is step 6!
3 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
How do u use a cell cycle in a sentence
den301095 [7]
Your own genetic code could be responsible for inviting diabetes into the cell cycle
6 0
3 years ago
Nasim is driving on a snow-covered road, and her car begins to slide. The quick behavioral response and the increased heart rate
Luda [366]

Answer:

1. sympathetic

2. parasympathetic

Explanation:

The sympathetic division of the autonomic nervous system triggers the release of stress hormones from adrenal medulla under emergency conditions. There is a series of physiological responses such as increased heart and breathing rate, an increased flow of blood to skeletal muscles, dilation of pupils, etc. These events helped Nasim to fight the stress conditions.  

Once she was relieved, the parasympathetic system is activated that shut down the physiological responses generated by sympathetic division. It slows down the breathing and heart rate and triggers the digestion and absorption of nutrients to restore the energy level of cells.

3 0
3 years ago
This biome is filled with large hardwood trees
JulijaS [17]

Answer:

b Taiga

Explanation:

5 0
3 years ago
Other questions:
  • How much work is done when a force of 15.0 newtons is used to lift a box 3.0 meters into the air?
    11·2 answers
  • Which planet is the farthest inner planet
    11·1 answer
  • This pie chart presents data on sources of methane emissions in the United States between 1990 and 2013. Which questions would h
    15·1 answer
  • what is the probability that a cross between parents who are both homozygous recessive trait will have offspring that are homozy
    6·2 answers
  • In cellular respiration, what pathway directly generates atp for the cell?
    6·1 answer
  • A client has an above-the-knee amputation of the left leg because of arterial insufficiency. to prevent a hip flexion contractur
    5·2 answers
  • Anole lizards mainly eat small insects. Suppose an anole lizard saw a bright red butterfly and ate it, but was ill afterwards. F
    15·2 answers
  • What is a template for a rna sequence
    15·1 answer
  • Which type of rock was the first to exist on the planet?
    14·1 answer
  • PLZ help ill give Brainliest
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!