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4 years ago

Imagine a gene mutation creates a new color of hair . According to Andersen , what will this do ?

Biology

2 answers:

svetoff [14.1K]4 years ago

6 0

A because the most that will happen is just fade away there is nothing special.

Phoenix [80]4 years ago

5 0

Answer:

E.) change frequency in the gene pool

Explanation:

Genetic pool is the name given to the set of all unique alleles within a population in a given area that shows what the genetic frequency of that population would be in relation to the phenotypic and genotypic characteristics. In other words, the gene pool reveals the genetic makeup of a population, showing the totality of genes.

In this case, we can say that if a genetic mutation creates a new hair color within a population, the genetic makeup of that population is modified, which results in a change in frequency in the gene pool.

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The cell theory eventually replaced the concept of spontaneous generation as a result of what experimental evidence?

Arisa [49]

Answer:- Option C - evidence that microorganisms cannot grow in boiled broth when new organisms were not allowed to enter.

Explanation:-

Theory of spontaneous generation stated that the living organisms can be created from non living matter. However, this theory was disapproved and replaced by the cell theory which stated that all living organisms are created from cells and new cells arise from pre-existing cells.

There were several experiments conducted by various scientists to disapprove the theory of spontaneous generation however, the experiment that was most successful to do so was the one conducted by Louis Pasteur in 1859.

Description of the experiment:-

-In his experiment, Pasteur boiled a meat broth in a flask (it was known that boiling the broth kills the micro organisms) and then heated the neck of the flask to bend into a S- shape.

The purpose of the S shaped neck was to allow the air to enter into the flask but not the micro-organisms as the micro organisms will settle by gravity in the neck and not reach into the flask.

observations of the experiment :-

1. Pasteur observed that even though the air entered the flask no micro organisms were growing in the flask.

2. Further,when he tilted the flask so that the broth came in contact with the part of the neck where the air borne microorganisms could have settled he was able to observe microbial growth in the flask.

These observations laid the theory of spontaneous generation to rest and proved that organisms can only grow in the presence of pre-existing cells which in this case were the microorganisms.

4 0

3 years ago

What are the body’s 2 defense systems for foreign materials

Alexxandr [17]

Answer:

immune system

Explanation:

The adaptive immune system reacts specifically to pathogens (germs). It is able to recognize attacking pathogens and fights against certain antigens or foreign substances. The next time a known antigen is encountered, the adaptive immune system can respond faster.

8 0

3 years ago

I WILL GIVE BRAINLIEST!!!

Phantasy [73]

Answer:

Population density will increase and the rate of population growth will eventually slow.

Explanation:

8 0

3 years ago

The table below shows some characteristics of three different types of muscles. Characteristics of Different Types of Muscles Ty

Assoli18 [71]

Answer:

Type B are cardiac muscles, because they are not found in any other part of the body.

Explanation:

5 0

3 years ago

What role does an mRNA molecule play in the flow of information for protein synthesis?

Svetradugi [14.3K]

MRNA aka messenger rna is what is created to "transcribe the dna". Since dna cannot leave the nucleus, it must somehow give its information a different way. What happens is that DNA opens and different nucleotides form together with the bases that are now open. This form is called mRNA. mRNA now takes this information, travels outside the nucleus to the ribisomes. Here the information is read and proteins are synthesized. In conclusion mRNA is needed to transfer the info out of the nucleus

8 0

3 years ago