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2 years ago

Compare the similarities and differences between natural selection and artificial selection

1 answer:

3 0

Similarities: Natural Selection and Artificial Selection both result in the alteration of the gene pool. It can also change phenotypes of different species'.

Differences: Artificial Selection is when a specific trait is not wanted, and so it is not bred.

For example, humans did not like how yellow peas looked. They liked the healthy looking green better. So, they killed the yellow peas, and bred the green peas with other green pea plants, and right now it is almost completely out of our gene pool.

Natural Selection is when something naturally occurs, such as a natural disaster, famine, plague, invasive species introduction.

For example, if 10 camels lived in a desert, but one of them didn't have as good of a metabolism and stayed full longer, then that one would survive, while the others might not.

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Do potato and mushroom contain enzymes?

tia_tia [17]

Yes, Indeed they do!

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2 years ago

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For many years, scientists believed that almost all animal lineages burst into being during the Cambrian era (just after the end

frosja888 [35]

Answer:

Option (A)

Explanation:

The Precambrian represents the time period, right from the beginning of the earth to about 540 million years back. It is divided into 3 parts, namely the Hadean, the Archean and the Proterozoic. Throughout this geological time, vast changes have taken place on earth. The first life forms of about 3.8 billion years old, that existed on earth were the simple unicellular organisms, whose traces were only found at some particular places. These organisms were very small and are comprised of soft bodies, so they were affected by the earth's dynamic processes. The organisms in order to get fossilized must contain hard parts. Due to the presence of soft bodies, the organisms were not fossilized and so it took a long time to demarcate that the late Precambrian organisms were animal-like life.

hence, the correct answer is option (A).

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2 years ago

Which of the following is an example of an allele? *<br><br> 1.H<br> 2. HH<br> 3. Hr<br> 4. RRR

VMariaS [17]

Examples of allele types are HH. That is option 2.

<h3>Gene Allele </h3>

An allele in genetic studies is an alternative gene form that is located at a particular point of the chromosome. It is usually represented with capital and small letter of the same alphabet.

There are two types of a allele which include:

Dominant allele: This is when the variation seen in a gene produces a noticeable phenotype. This is seen in the gene combination of HH.

Recessive allele: This type of allele does not produce any visible noticeable phenotype. This is seen in hh.

Therefore, examples of allele types are HH

Learn more about allele here:

brainly.com/question/25813022

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1 year ago

1. Which of these statements can be

stich3 [128]

A)A chromosome is a long continuous strand of DNA

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2 years ago

Which of the following is not a function of the exocrine sweat gland? It interferes with adhesion of microorganisms. It uses der

poizon [28]

Answer:

The correct answer is 3rd statement.

Explanation:

A kind of sweat gland that discharges water from the surface of the body at the time of high internal temperatures are known as exocrine sweat glands. This water gets evaporates and results in the cooling of the skin surface. When the temperature of the body enhances, the sweat glands along with water also discharges electrolytes from the surface of the body.

The sweat glands also exhibit antibacterial properties, as they discharge dermcidin that interferes with the sticking of the microbes with the skin surface. The exocrine sweat glands do not secrete lipids, thus, they lack the tendency to condition the skin surrounding it. Hence, the given statement 3 is incorrect.

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2 years ago