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Ierofanga [76]
3 years ago
8

HELP PLS I WILL SUK UR TOES IF U HELP ME

Biology
1 answer:
Shalnov [3]3 years ago
3 0

Answer:

b

Explanation:

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Recombinant DNA technology allows scientists to mass-produce some human proteins by transferring human genes into bacteria. The
zimovet [89]

Answer: Bacteria lack a mechanism for splicing out introns

Explanation:

Factor VII gene is 186k nucleotides long while the protein is 2332 amino acids long. <u>This lenght discrepancy is due to introns interrupting gene</u>, because the cell first transcribes the entire gene and then cuts introns out of the transcript. At the end, it splices the remaining pieces. Prokaryotes don't perform splicing so it can not edit out introns from the primary mRNA transcript. To produce an eukaryote gene in prokaryotes it is necessary to use a reverse transcriptase to get a cDNA sequence without the introns, and then insert that into a bacterial genome.

7 0
3 years ago
When a single species, such as ancestor of the Galapagos finches, has evolved into several different forms that live in differen
natima [27]

Answer:

A

Explanation:

In evolutionary biology, adaptive radiation is a process in which organisms diversify rapidly from an ancestral species into a multitude of new forms, particularly when a change in the environment makes new resources available, alters biotic interactions or opens new environmental niches.

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3 years ago
Two different populations of birds live in the same area and eat the same type of food
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Kodak black need some milk he a good rapper

7 0
3 years ago
DNA wrapped around histone proteins forms a material called ____ which condenses tightly to form _____ that can be seen with a l
makkiz [27]

Answer:

The correct answer will be-

1. Nucleosomes

2. Chromatin

3. Sister chroamtid

4. Centromere

Explanation:

The DNA is a very long molecule which if has to be passed on to the daughter cell as it is will cause problems. So, to reduce problems a cell form tightly packed structure of DNA so that they can be passed easily to the daughter cell.

The packaging of DNA begins with the wrapping of the DNA around histone proteins which forms the 11 nm basic structural units called nucleosomes. The nucleosomes start condensing each other and form 30 nm structure chromatin fibres.

The chromatin fibres undergo replication during S phase which produces an exact copy of the chromatin called sister chromatids bound to each other at a central point called centromere which helps the separation of the chromatids during M phase.

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3 years ago
The _____ is the process of forming new cells from the pre-existing cells
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The reproduction is the process of forming new cells from the pre-existing cells. Another term used for this process is <span>cell division.</span>
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3 years ago
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