A way of separating a large group of closely related organisms into smaller subgroups is

A wave that requires a medium such as air or water through which to travel is called a mechanical wave.

ss7ja [257]

The answer is Mechanical.

5 0

2 years ago

So option 1, 2 or 3....................................................................

kotykmax [81]

I would probably go with 2

7 0

2 years ago

Read 2 more answers

The DNA sequence that produced the mRNA sequence uracil, guanine, cytosine, guanine adenine uracil adenine adenine

vesna_86 [32]

Answer:

The DNA sequence that produced the mRNA sequence uracil, guanine, cytosine, guanine adenine uracil adenine adenine during transcription is adenine, cytosine, guanine, cytosine, thymine, adenine, thymine, thymine.

Explanation:

Transcription of DNA into messenger RNA (mRNA) is a process in which the specific nucleotide sequence is transferred from one molecule to another, through the synthesis of mRNA molecules from a DNA strand.

The complete transcription process is done by nitrogenous base complementarity, where mRNA receives the sequence of complementary bases according to the DNA sequence:

Adenine is complemented with uracil, since in RNA the thymine is substituted by this uracil.
Thymine is complemented with adenine.
Cytosine is complemented with guanine.
Guanine is complemented with cytosine.

Thus an uracil mRNA sequence, guanine, cytosine, guanine adenine uracil adenine U-G-C-G-A-U-A-A comes from a DNA sequence adenine, cytosine, guanine, cytosine, thymine, adenine, thymine, thymine or A-C-G-C-T-A-T.

6 0

2 years ago

After a copper smelter begins operation, local downwind populations of plants begin to adapt to the resulting air pollution. Sci

zhannawk [14.2K]

Answer: Directional selection

Explanation:

In the population genetics, directional selection is the mode of selection during which the extreme phenotype are favored more than the other phenotype.

This causes the allele frequency to shift towards the time in the direction of that particular phenotype.

Here, in the question the acid tolerant plant species is favored over the other phenotype.

Hence, the correct answer is option D

3 0

3 years ago

What is an essential role played by large intestine bacteria?

Likurg_2 [28]

Answer:

The correct answer is: synthesize vitamin K and B-complex vitamins.

Explanation:

The large intestine, an important region of the gastrointestinal tract, is populated with bacteria that maintain our bodies healthy. The term used to describe these organisms that live in the digestive tract is gut microbiota.

The relationship between humans and the gut microbiota is not only non-harmful but also beneficial to humans. Bacteria ferment dietary fibers into short-chain fatty acids for us to absorb it. Gut microbiota also plays a crucial role in synthesizing vitamin B and vitamin K, as well as metabolizing sterols and bile acids. These bacteria act much like an endocrine system that regulates intestinal function with the use of short-chain fatty acids, as if they were hormones.

Vitamin K is important for blood clotting, while vitamin B intervenes in cellular metabolism.

6 0

3 years ago

Read 2 more answers