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
erma4kov [3.2K]
3 years ago
10

A "U-shaped" distribution for a trait, with high frequencies of individuals who exhibit extreme values for a trait (and few indi

viduals with medium values), is most likely to be caused by ______ selection
Biology
1 answer:
frozen [14]3 years ago
3 0

Answer:

Disruptive Selection.

Explanation:

Disruptive selection, also known as selection diversification, explains shifts in population genetics that prefer extreme values for a trait over intermediate values. In this case, trait variation increases, and the population is split into two different classes. So, in the given case where A "U-shaped" distribution for a trait, with high frequencies of individuals who exhibit extreme values for a trait (and few individuals with medium values), is most likely to be caused by Disruptive selection.

You might be interested in
A client informs the nurse that he wants to discontinue his treatment and go home. later, the nurse finds the client dressed to
Bogdan [553]
Be calm. Explain the reasons the patient should stay. Ask them to please wait so nurse can check if there are discharge instructions. A lot of actions will be determined by what the diagnosis is. Don't be demanding, be understanding.
3 0
3 years ago
How might marine scientists combat eutrophication?
Kay [80]

Eutrophication is the overgrowth of algae in lakes and ponds

that is usually caused by the introduction of different chemicals

into the water from fertilizer run-off. Some ways to combat this

are to increase the flow of moving water, prevent contamination

from fertilizer, and reduce pollution of our lakes and streams.

5 0
3 years ago
increasing intracellular cAMP leads to smooth muscle relaxation by: Group of answer choices inhibiting IP3 channels, leading to
kirza4 [7]

Answer:

1. Inhibiting IP3 channels, leading to decreased Ca2 in the sarcoplasm and reduced contraction.  

2. Increasing the relative activity of MLCP, leading to a decrease in tension.

3. Activating K channels, increasing K leaking out of the cell which hyperpolarizes it and decreases the likelihood of Ca2 entry.

Explanation

In smooth muscle, cyclic AMP (cAMP) mediates relaxation because cAMP inhibits a specific kinase required for myosin light chain protein (MLCP) phosphorylation, thereby triggering contraction in the smooth muscles. It has been shown that cAMP inhibits 1,4,5-trisphosphate (IP3)-dependent calcium ions (Ca 2+) release by activation of the cGMP-dependent protein kinase (PKG). PKG proteins act to modulate Ca2+ oscillations by stimulating sarcoplasmic Ca2+-ATPase membrane proteins, increasing Ca2+ in the sarcoplasmic reticulum stores and Ca2+ efflux from the cells, and activate voltage-gated potassium (K) channels, thereby leading to membrane hyperpolarization and reducing Ca2+ entry through Ca2+ channels.

6 0
2 years ago
Cholesterol is a ________, which ________. steroid; is a component of eukaryotic membranes steroid; is the basis for many animal
olasank [31]

Answer:

Steroid; is a component of eukaryotic membranes.

Explanation:

Cholesterol is one of the most important chemical synthesized by all the animals. The chemical formula of cholesterol is C27H46O. The cholesterol in solid state was first given by C27H46O.

Cholesterol is present in the plasma membrane and maintain its membrane fluidity. Cholesterol is an important structure of the plasma membrane and acts as a pre cursor for various hormone. The cholesterol is a type of sterol and a lipid.

Thus, the correct answer is option (1).

6 0
4 years ago
When they are disturbed tunicates tend to squirt ______ out
Crazy boy [7]
Tend to squirt ink out
6 0
4 years ago
Other questions:
  • Describe how adh secretion maintains plasma osmolarity levels during dehydration and water loading
    7·1 answer
  • Why is flooding more likely after many trees are removed from an area?
    15·1 answer
  • Three factors that increase the rates of enzyme-controlled reactions are the
    9·1 answer
  • Which statement best describes a stream with a steep gradient?
    15·1 answer
  • Why does weight loss come slowly following rapid loss during the initial three weeks of a rigorous diet?
    12·1 answer
  • You feed a canned dog food that is 75% moisture. When analyzed, it contained 30% crude protein and 1.20% calcium on a dry matter
    11·1 answer
  • Which process changes the water vapor into water droplets that form the cloud
    12·1 answer
  • Want to get a memory from short term to long term? You have to show a little love to your
    9·1 answer
  • I’ll mark brainliest
    7·1 answer
  • What is the basic unit of life?
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!