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3 years ago

How does human evolution or natural selection relate to the susceptibility of disease

1 answer:

4 0

Some living thing's bodies are weaker than others. For the species to live, the strong ones of the species will not get sick, reproduce and create strong offspring. The weak will die out.

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List three stimuli plants can respond to and which are found in their environment

Phantasy [73]

Answer:

Plants, however, are rooted in place and must respond to the surrounding environmental factors. Plants have sophisticated systems to detect and respond to light, gravity, temperature, and physical touch.

hope this helps:)

3 0

3 years ago

25. Which of these does natural selection work on?

galina1969 [7]

The answer is B. Natural selection will find a way to affect one, then that one will affect many others.

8 0

3 years ago

Which mechanoreceptor is located deeper in the skin and responds continuously to stimulation and is associated with perceiving s

Eva8 [605]

The mechanoreceptor that is located deeper in the skin and responds continuously to stimulation and is associated with perceiving stretching of the skin is called Ruffini corpuscle.

Mechanoreceptor is a sensory receptor that responds to mechanical pressure. They are connected with sensory neurons that convert this mechanical pressure into electrical signal. It is of four types-

1. Merkel corpuscles- detect pressure and roughness on skin.

2. Ruffini corpuscles- detect deep tension in skin, skin stretch.

3. Meissner corpuscles- perception of light touch and slip on skin.

4. Pacinian corpuscles or Vater-panician corpuscles- detect rapid vibrations.

When these receptors sense a stimuli they gets excited and generates an impulse that travels through the nerve cells into the brain.

To learn more about Mechanoreceptor here

brainly.com/question/17947146

#SPJ4

3 0

2 years ago

In Drosophila, the genes for body coloration and eye size are on different chromosomes. Normal-colored bodies are dominant to eb

Yuri [45]

Answer:

225 flies

Explanation:

Let gene for body colour : A

Let gene for eye type : B

Parent 1 : normal body and normal eyes = AABB

Parent 2: ebony body and eyeless = aabb

F1 : AABB X aabb = AaBb ( all have normal body and normal eye )

F1 progeny is self crossed given that the two genes are on different chromosomes which means they show independent assortment:

AaBb X AaBb =

A_B_ = normal body, normal eyes = 9

aaB_ = ebony body, normal eyes = 3

A_bb = normal body, eyeless = 3

aabb = ebony body, eyeless = 1

Hence the ratio is 9 : 3 : 3 : 1

Out of the 400 flies:

(9/16) * 400 = 225 flies have normal body colour and normal eyes

7 0

3 years ago

Human population growth is currently most rapid in

kirill115 [55]

It is more rapid in the earth I’m just kidding it’s more rapid in the Middle ages

3 0

3 years ago