The Siberian Husky is a medium dog, weighing between 16-27kg (35-60lbs). These dogs have strong pectoral and leg muscles, allowing them to move through dense snow. If they had heavier muscles, they would sink deeper into the snow and move slower. Yet, if they had lighter muscles, they would not be strong enough to pull sleds and equipment. This is an example of which type of natural selection?a. Directional selection
b. Stabilizing selection
c. Disruptive selection

Answers

Answer 1

Answer: b. Stabilizing selection. In stabilizing selection, the average trait in the population is more favored. In this case, the average leg muscle is favored over heavier and lighter because it can benefit Siberian Husky's role more.

Answer 2

Answer:

The answer is the second option B

Related Questions

Which statement is NOT applicable to scientific models?A) Models are a description of nature that can predict things about similar situations. B) Models are too complex to be used by the average person; so they are limited by who can use them. C) Models are testable ideas created by the human mind to tell stories about what happens in nature. D) Models are approximations or a sum of a real system that omits all but most essential variables of a system.
What is the role of greenhouse gases in the atmosphere
Which statement about stomata is true?A.)The number of stomata is greater on the upper surface of the leaf. B.)The number of stomata is greater on the lower surface of the leaf. C.)The number of stomata is equal on both surfaces of the leaf.
What is the Cell Theory and why is it important?
What is the anaerobic respiration equation in symbol?

Why are plasmids so widely used in recombinant DNA studies?A. because they naturally contain much foreign DNA
B. because they can be used to transform bacteria
C. because it is difficult to insert new genes into them
D. because they cannot be cut with restriction enzymes

Answers

Answer:

Option (B).

Explanation:

Plamids are the extra chromsomal circular DNA present in the bacterias. Plasmid DNA can undergo replication independently to the chromsomal DNA.

Plamids can be used to transform bacteria and used in the molecular techniques. The foreign gene can easily be inserted into the plasmid DNA and used in the formation of recombinant protein.

Thus, the correct answer is option (B).

I would guess is B
A: the bacteria contains its DNA
B; when a new gene is added it can transform the bacteria by altering its biochemistry
C:its easy to insert new genes into a plasmid
D: the plasmid is cut with special enzymes

hope that helps

Which of the following statements accurately describes the process of dating Earth's history?a. Scientists use radiometric dating to determine the relative age of a new fossil.
b. Scientists use relative dating to determine the absolute age of a new fossil.
c. Scientists use radioactive isotopes to determine the absolute age of a new fossil.
d. Scientists use index fossils to determine the specific years of age of a new fossil.

Answers

a. Scientists use radiometric dating to determine the relative age of a new fossil.

Example:
Glossopteris fossils are the most reoccurring fossils in most land masses. In Alfred Wegener’s Continental drift theory which he claims that the continents of the earth may have relocated themselves from their former positions. Which when you synthesize the whole continents you’ll have the “all-earth” or so-called Pangea. The super continent as Wegener’s continental drift theory suggests. These Glossopteris is event in many places mainly in Africa, South America, Australia, India, and Antarctica. That in the paleontological perspective can assert his theory that these organisms have been roaming and surviving all over this one super continent and were dispersed in, that's why they can be found in many places as mentioned.

List the three types of plate boundaries and describe the relative motion at each of them

Answers

The three types of plate boundaries are ;

Divergent plate boundary
Convergent plate boundary
Transform plate boundary

The divergent plate boundary ; This boundary is formed when tectonic plates move away from each other thereby forming new crust below the earth in the process

Convergent plate boundary ; This plate boundary is formed by the collision of two or more tectonic plates. If one of colliding plates is an Oceanic crust tectonic plate the collision will lead to a subduction

Transform plate boundary ; At this boundary tectonic plates slide pass one another without having any significant effect on the earth crust

Hence we can conclude that the three types of plate boundaries are ; Divergent , convergent and transform

Learn more : brainly.com/question/21536887

Divergent plate- The motion of the boundary is outward making new crust beneath the earth Convergent - going inward the denser crust goes under the less dense crust which pulling the crust inside the earth melting it down Transform- is just slide by each other nothing is going into the earth or spreading out making new crust is just slide the plate boundaries

Under the microscope, a cell shows formation of centrosomes and spindle microtubules.

Answers

Under the microscope, a cell shows the formation of centrosomes and spindle microtubules. After that would be the separation of the sister chromatids. The sister chromatids are the halves of replica or duplication of the chromosomes.

Where do many of the cell's metabolic processes take place?a. In the cytoplasm
b. in the nucleus
c. in a vacuole
d. In the cytoskeleton

Answers

D because it goes in and out

Final answer:

Many of the cell's metabolic processes take place in the cytoplasm. The cytoplasm is the area of the cell where general metabolic reactions like protein synthesis, cellular respiration, and waste removal happen.

Explanation:

Many of the cell's metabolic processes occur in the cytoplasm. The cytoplasm is the part of the cell outside the nucleus where a variety of reactions, such as cellular respiration, protein synthesis, and waste removal, occur. The other listed components of the cell – the nucleus, vacuoles, and cytoskeleton, have more specific roles that do not primarily involve general metabolic processes.

Learn more about Cell's Metabolic Processes here:

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Sharks have highly developed _____.thermoreceptors
photoreceptors
olfactory receptors
mechanoreceptors

Answers

Among the options the best answer is "olfactory receptors" - as the sharks have a very good sense of smell. (they have the other receptors, but not as developed)
however, they are more famous for their electroreceptrors- they can sense the electric current around them!

Answer: olfactory receptors

Sharks have highly developed olfactory receptors. The olfactory receptors in animals allows them to sense the odor. Sharks have olfactory receptors more sensitive than humans. They have nostrils located on the underside of their snout, which they use for smelling not for breathing. The smell of the prey animal or the blood of any animal is detected by the shark with the help of these receptors.

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