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yuradex [85]
3 years ago
11

Eukaryotic organisms speed up the process of dna replication by

Biology
1 answer:
stiks02 [169]3 years ago
8 0

Answer:

using multiple origins of replication on each chromosome

Explanation:

You might be interested in
You have identified two mutants with same phenotype.
algol13

Answer:

No, there are multiple ways in which different mutations in the same gene can cause the same phenotype

Explanation:

Several different mechanisms of mutation can lead to the same phenotype. For example, lets say our phenotype is that flies have white eyes, and we know that this occurs in one particular gene that normally makes the eye colour red. (the red gene)

These mutations likely rendered the red gene ineffective (as the eyes are not red). However, this could happen in a variety of ways.

  • There could be a single base deletion in the first exon of the mRNA, changing the reading frame of the protein and messing up the entire sequence (a frame shift mutations)
  • The entire gene could be deleted
  • A single base could be substituted in an important site of the gene, for example, one which translates into a catalytic residue or binding site in the protein
  • There could be an inversion at the promoter region of the gene, such that a transcription factor can no longer bind to transcribe the gene.

There are countless other ways in which a mutation could have been caused. Therefore, just because we know the same gene is affected does not mean that we can assume the mutations are identical.

7 0
3 years ago
In prokaryotes new mutations accumulate quickly in populations, while in eukaryotes new mutations accumulate much more slowly.
Mnenie [13.5K]

Answer: Option A

Explanation:

In Prokaryotes the the rate of new mutations is much more as compared to the eukaryotes. The rate of accumulation of mutation is slow in case of  eukaryote because their generation is long as compared to prokaryotes.

Prokaryotes have short generation time and large population size which enables them to accumulate the mutation quickly.

The machinery is also not that complex when it comes to prokaryotes. Transduction, conjugation and tranposable elements. So, the changes during these processes leads to mutation in the prokaryotes and can be observed quickly due to their small generation.

6 0
3 years ago
How did robert hooke contribute to the cell theory?
Blizzard [7]

Answer:

<em>Read explanation.</em>

Explanation:

Robert Hooke defined what a cell, in other words, he gave that name to what we now know as a "cell".

How he came up with that name is simple, and doesn't involve science or biology itself. All happened when he was looking to a sample of oak bark, and saw this tiny enclosed structures, that reminded him of a cell.

Hope it helped,

BiologiaMagister

5 0
3 years ago
Assume new techniques are developed with permit removing from a cell any desired parts or materials without killing the cell. If
monitta

Answer:

c. Spindle fibers

Explanation:

In eukaryotic cells, the centrioles are small sets of microtubules composed of tubulin proteins. Moreover, in animal cells, a centrosome is an organelle localized near the nucleus which contains a pair of centrioles. These organelles (centrosomes) are referred to as microtubule-organizing centers. During Anaphase, centrioles move to opposite sides in the cell in order to organize the spindle fibers and separate the chromosomes during cell division.

7 0
3 years ago
Help please//what’s a phenotype?? thank you.<br><br><br> NO LINKS PLS
Tema [17]

Answer:

Brown hair, dimples, and green eyes.

Explanation:

A phenotype is a description of your physical characteristics (observable characteristics). These are the things that you see when you look at someone.

4 0
3 years ago
Read 2 more answers
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