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3 years ago

What is a function of the somatic nervous system?

Biology

2 answers:

castortr0y [4]3 years ago

8 0

Answer:

The voluntary or somatic nervous system consists of the nerves connecting the brain and spinal cord to the skeletal muscles and sensory receptors in the skin, eyes, and ears. It is part of the peripheral nervous system that makes it possible to detect and interact with the world.

mariarad [96]3 years ago

7 0

The answer is controlling the movement of skeletal muscles.

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If an organism has 30 chromosomes in its body cells, how many chromosomes would it have in its sex cells (gametes)?

marysya [2.9K]

Answer:

Explanation:

Gametes have half the amount of dipliod somatic ells

6 0

3 years ago

within a forest ecosystem, there is a large amount of diversity among members of a warbler species. of the following stages of m

anzhelika [568]

Crossing over occurs between homologous chromosomes, and is closely involved in genetic variation. The stage that most contributes to diversity is stage C, where you can see chromosomes after crossing-over.

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There are different mechanisms involved in producing genetic variation among descendants. These are,

Crossing-over between homologous chromosomes (prophase 1),

Random lining of homologous chromosomes (metaphase 1),

Random fertilization

The Crossing-over events occur between two homologous chromosomes in the equatorial plane and make the daughter cells genetically different from the original one.

The Chiasma is the position where two homologous chromatids interchange genetic information, giving a place for new genetic material or information to be provided to descendants.

After crossing over, homologous chromosomes get separated again.

In the attached imaged there are four different stages of meiosis.

Stage C is the one that contributes the most to diversity.

We can see that crossing over has already occurred between homologous chromosomes, and they have already interchanged segments.

In the image you will see the difference between chromosomes that has gone through the crossing over mechanism, and chromosomes that has not. The difference in color represents segments interchange and variation.

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You can learn more about crossing over at

brainly.com/question/12911831?referrer=searchResults

brainly.com/question/394891?referrer=searchResults

6 0

2 years ago

The number of differences between cytochrome c of humans and cytochrome c of other organisms is as follows: Rhesus monkey - 1 di

liubo4ka [24]

Answer:

The species that will be most similar to humans will be

1. rhesus

2. pigeon

3. fruit fly

Explanation:

Evolution can be described as the process in which different organism evolve from common ancestors over a long period of time. Evolutionary studies show that some organisms have more shared characteristics as compared with other organisms. These organisms with common characteristics are believed to be closer to one another and evolved from the same ancestors.

In the above question, as there is only one difference between the cytochrome c of humans and rhesus, hence rhesus is the closest to humans. Pigeons has lesser number of differences than fruit fly, hence it is second on the list. Fruit fly has the maximum differences hence it is placed last.

3 0

3 years ago

Are hydrangeas Monocots or Dicots?

OlgaM077 [116]

The answer is Dicots.

7 0

3 years ago

Read 2 more answers

What did Charles Darwin discover as a result of his experiments with breeding pigeons?

katrin2010 [14]

Charles Darwin noticed that among the same species there were variations in traits based upon geographical location. These changes may have evolved from climate differences, predator/prey relationships and food sources. This particular experiment was intended to duplicate natural selection by demonstrating the concepts with artificial selection. The result was that over time, new traits could be bred for. Although there may be more than one correct answer here, the best answer is the first; desirable traits can be selected and bred in offspring.

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3 years ago