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wolverine [178]
3 years ago
11

There are four steps in bacterial conjugation. The second step is missing in this list. 1. Special sex pilus connects two cells.

2. 3. Each cell makes a complementary DNA strand. 4. The cells separate. Which is the missing step for the process of conjugation described? Two new, identical cells are produced. The cell membrane elongates and pinches off. Some DNA moves from one cell to another. A DNA molecule attaches to the cell membrane.
Biology
1 answer:
Natali [406]3 years ago
7 0

Answer:

The correct answer is "Some DNA moves from one cell to another".

Explanation:

Bacterial conjugation is a type of genetic material transference that occurs when a bacterium gets in direct contact with another. First, the bacteria gets connected with the second bacteria by using a structure known as special sex pilus. The second step is that some DNA moves from one cell to another. Actually, this DNA is the one that contains the genetic material that is going to be transferred.

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frozen [14]

Answer:

a. Inversion

b. Duplication

Explanation:

Inversion has the name suggest, has to do with a segment of DNA being reversed from end to end.

In this case here,

Inversion is taking place here.

species 1 ATGCAAATTTGGGCCCATGAATGGTTGCAA

species 2 ATGCAAAAATTTTGGTACGCCGAATGGTTGCAA

Therefore, the sequences in bold in species 1 are observed to be reversed end to end in species 2.

Deletion ❌❌

I am sure it's not feasible because deletion entails removal of a few sequences.

It can be seen that species 2 is longer than species 1, which gives another reason why deletion is not feasible too, as no sequences are seen to be deleted.

I believe duplication is feasible since AATT sequences are repeated once.

Our final answer,

inversion and duplication occur here.

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