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3 years ago

What can the result be if DNA replication does not occur without errors?

Biology

1 answer:

Wewaii [24]3 years ago

8 0

Answer:

C. A perfect, mutation-free society

Explanation:

Mutation is a genetic phenomenon involving the alteration or change in the genetic sequence of a gene. Mutation is commonly caused by mutagens (chemical substances that induce mutation), DNA replication mistakes or errors etc.

According to this question, if DNA replication occurs without error, this means that mutation will likely not occur, leading to a perfect, mutation-free society.

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Why is freshwater beneficial to plants

Svetlanka [38]

Explanation:

freshwater beneficial to plants is because estuaries are usually shallow, sunlight can reach all levels of the water. Plants and algae are important to freshwater biomes because they provide oxygen through photosynthesis,

6 0

3 years ago

Can someone explain Meiosis 1 and II to me like I'm a baby? (i really don't understand it!) 15 pts

topjm [15]

Answer:

Meiosis 1 is when the homologous chromosomes separate and crossing over occurs. Meiosis 2 is when the sister chromatids seperate and produces 4 haploid daughter cells.

Explanation:

The phases of Meiosis 1 are, Interphase, Prophase 1, Metaphase 1, Anaphase 1, Telophase 1 & Cytokinesis.

Interphase: DNA is replicated and organic material is synthesized.

Prophase 1: Chromosomes pair up

Metaphase 1: Crossing Over occurs and chromosomes line up at the equator.

Anaphase 1: Chromosomes pull apart

Telophase 1 & Cytokinesis: Cell pinches to both sides and begins to pull apart as the cytoplasm is copied.

The phases of Meiosis 2 are, Prophase 2, Metaphase 2, Anaphase 2, Telophase 2 & Cytokinesis.

Prophase 2: Two daughter cells are formed

Metaphase 2: Chromosomes line up at equator of both cells.

Anaphase 2: Sister chromatids are pulled apart in each cell.

Telophase 2 & Cytokinesis: The cells pinch to both sides as the cytoplasm is replicated and four granddaughter cells are formed.

3 0

3 years ago

What does messenger RNA do during protein synthesis?

kap26 [50]

Answer:

The correct answer is A copies the coded message from the DNA to cytoplasm .

Explanation:

mRNA plays a significant role during protein synthesis .mRNA also called messenger RNA contain codons which inturn contains the genetic information that comes from DNA.

mRNA is synthesized inside the nucleus during transcription but when that mRNA is transported into the cytoplasm for translation it carries the coded message or information from DNA of nucleus to the cytoplasm.

7 0

3 years ago

A 28-year-old male who is about to be married has been diagnosed with genital herpes. To avoid complications from the disease an

aliina [53]

Answer:

What the doctor <u>should</u> recommend is: washing hands frequently, especially after touching a lesion , taking acyclovir for a 6- to 12-month period , and always wearing a condom when having sexual intercourse. What he <u>shouldn't</u> recommend is taking penicillin daily for the next year.

Explanation:

Genital Herpes is a viral disease that is frequently transmitted through sexual intercourse and causes infected sores, ulcers and cuts.

While the treatment for herpes can reduce the symptoms, the virus remains latent in the body and will most likely re-appear to cause the same symptoms.

Even when inactive, the virus can be transmitted, so the only way to prevent the spread of herpes is by using condoms or dental dams when engaging in sexual relationships.

To treat herpes, the best option is acyclovir -an antiviral-.

Penicillin WOULD NOT WORK because it is an antibiotic and thus it only kills bacteria (not viruses).

7 0

3 years ago

1. In summer squash, white fruit color is dominant, yellow is recessive. If a squash plant that is homozygous white is cross

____ [38]

Here, Cross: = WW × ww

Here, W(white) is dominant over w(yellow).

Offspring: Ww , Ww, Ww, Ww

1) Genotypes: Ww , Ww, Ww, Ww

2) Phenotypes: They all will be "White"

3) Genotypic ratio = WW:Ww:ww = 0 : 1 : 0

4) Phenotypic ratio = White : Yellow = 1 : 0

Hope this helps!

6 0

4 years ago

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