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IrinaVladis [17]
3 years ago
14

What is true about DNA mutations?

Biology
1 answer:
JulsSmile [24]3 years ago
6 0

Answer:

B

Explanation:

Crossing over is the process involved during meiosis of two chromosomes sharing genetic information with each other from each parent. This happens so the two daughter cells or sister chromatids have a variety of genetic information and so they are not completely identical. This leads to genetic diversity or variation.

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While observing cardiac muscle under the microscope for the first time, Jennifer noticed lines running perpendicular to the dire
mart [117]

Answer:

The right answer is intercalated discs.

Explanation:

If you observe cardiac muscles under a microscope, the first feature that appears is Intercalated discs. Cardiac muscles contains heart muscle cells which are called as cardiomyocytes which are linked by these discs to perform a single functional organ.

Intercalated discs helps in harmonizing the contraction of cardiac tissues.

                   

4 0
3 years ago
Read the paragraph.
Lyrx [107]

The sentence which should come next in the paragraph to maintain the compare contrast structure is, Gerbils have long furry tails, while hamsters do not have tails.

Answer: Option C

<u>Explanation:</u>

Compare and contrast text structure is basically a type of structure where two things are compared and contrasted at the same time. In simple terms, comparison is finding the similarities whereas contrast means finding the differences.  

When it comes to Gerbils and hamsters, both these organism have many similarities. The only difference is in their tail. Gerbils have a very long and furry tail, hamsters on the other hand have a very short tail. Their tails are so short that one often find it difficult to notice its tail.

8 0
4 years ago
Read 2 more answers
A plant with round seeds is crossed with another plant with round seeds. Round are dominant over oval seeds. When two heterozygo
ASHA 777 [7]

Answer:

Round will appear 75% of the time

Explanation:

Rr*Rr punnet square

Results

RR round

Rr round

Rr round

rr oval

25% round homozygous

50% round heterozygous

25% oval homozygous

7 0
4 years ago
Read 2 more answers
Two pure lines of four-o'clock plants, one with red flowers and the other with white flowers, are crossed. The F1 progeny all ar
Lubov Fominskaja [6]

Answer:

<h2>Incomplete dominance</h2>

Explanation:

As given here;

Two pure line of four-o'clock plant, one having red flower and other having white flower, when they are crossed, they produce all pink progeny.

So, lets red as RR and white as rr

Cross between RR and rr

Here all offspring are Rr ( Pink ).

It's the result of incomplete dominance, in complete dominance the offspring is the intermediate of both the parents.

F2 generation:

As cross between Rr and Rr

progeny are: RR, Rr, Rr, rr

RR =red

Rr= pink

rr= white

So,  red: pink: white = 25:50:25

3 0
3 years ago
Based on the results of the experiment as well as what you learned about the mechanism of gene transfer between bacterial cells,
cestrela7 [59]

Since, the experiment is not given but on the basis of the mechanism of genetic transfer this question can be answered.  

Answer:

The mechanism of gene transfer is important and beneficial for bacteria in the adverse environment conditions. The different mechanism of gene transfer are conjugation, transformation and transduction.

The ampicillin resistance gene is present on the plasmid DNA and not on the chromosomal DNA. Only conjugation is the mechanism in which the plasmid DNA is transferred from one bacteria to another bacteria. The ampicillin resistance gene is transferred from Strain II to strain I means from the bacteria that has the ampicillin resistance gene to the bacteria that has no ampicillin resistance gene in it.

5 0
3 years ago
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