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4 years ago

Which of the following is a true statement regarding the operational definition of a gene?

Biology

1 answer:

Oduvanchick [21]4 years ago

7 0

Answer:

a. most genes encode one polypeptide and can be operationally defined by the complementation test

Explanation:

Genes are the stretch of DNA that code for specific polypeptides. In general, one gene codes for the only polypeptide.

Genes are defined by complementation tests which in turn tell if two mutations have occurred in the alleles of the same gene or different gene.

For the purpose, an organism with the homozygous genotype for one recessive mutation is crossed with an organism having the homozygous recessive genotype for another mutation.

If the two mutations are in the same gene, the progeny would show the mutant phenotype. On the other hand, if two mutations are in different genes, the progeny would exhibit normal phenotype.

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The atomic mass of an atom with six electrons, eight neutrons, and six protons is: A. six

Elenna [48]

The answer should be B.

Explanation: <u><em>You had to used their formula are: A= atomic mass numbers= to numbers of protons+ a number of neutrons in the nucleus. Z= atomic number equal to number of protons in the nucleus. N= to a number of neutrons in the nucleus. And it gave us the answer is A=N+Z=14 is the right answer. Hope this helps! And thank you for posting your question at here on Brainly. And have a great day. -Charlie</em></u>

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4 years ago

Describe the amount of freshwater on earth and where it is used and stored

Sergeeva-Olga [200]

According to the U.S. Geological Survey, most of that three percent is inaccessible. Over 68 percent of the fresh water on Earth is found in icecaps and glaciers, and just over 30 percent is found in ground water. Only about 0.3 percent of our fresh water is found in the surface water of lakes, rivers, and swamps. The use for the water in the world is for household drinking water. The ocean stores about 97 percent of the Earth's water; the remaining three percent is stored in glaciers and ice, below the ground, in rivers and lakes. Of the world's total water supply of about 332 million cubic miles of water, about 97 percent is stored in the ocean.

Hope this helps!

5 0

4 years ago

The distance north or south of the equator , as measured in degrees is called?

telo118 [61]

Answer:

longitude

Explanation:

5 0

4 years ago

Jan Baptista van Helmont did an important experiment related to photosynthesis. He weighed a small willow tree and a pot of soil

Brums [2.3K]

Answer:

C. Plants must be able to increase their mass using substances in addition to what is found in soil

Explanation:

The plant increased its mass by 74.4 kg, and the mass of the soil decreased only by 54 g (less than 0.1 % the mass of the plant).

The plant must have gotten its mass from someplace other than the soil.

A is wrong. The plant gets its mass from someplace else.

B is wrong. Plants don't need soil as such, but they need the water that is in the soil.

D is wrong. The water contains no food. It is just water.

E is wrong. The experiment demonstrated nothing about oxygen.

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4 years ago

In the above study, the investigators determined that a low concentration of dnp increased the average life span from 719 days (

Sever21 [200]

<h2>Average life span population</h2>

Explanation:

A study done by the group of investigators in america determined that by decreasing the concentration of dnp will increase the average life from 719 days of a control population to 770 for dnp controlled population or by 1.07.
So the average lifespan of every individual will increases roughly 5.6 years so as average lifespan will increase from 719 to 770 days.
Hence, the right answer is " 5.6 years would be added the same percentage increase were observed."

7 0

3 years ago