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nevsk [136]
2 years ago
9

I need help with this question. 10+ points and Brainliest for best answer!

Biology
2 answers:
Papessa [141]2 years ago
8 0

Answer:

how old something is

Explanation:

Lady bird [3.3K]2 years ago
5 0

Answer: The full explanation below.

Explanation: The advantage of Relative dating is it can tell if a rock is older or younger that a certain object where the age is also not certain making it easier to tell when the other object was from, however it dose not give an exact age of the rock. Absolute dating is different because it gives you the exact age of the rock, but does not aid in find the age of any artifacts that can be found around it. Hope this helps! :D

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What happens next after the ribosome reaches the start codon?
iris [78.8K]

RNA molecules attach to codons when the ribosome reaches the start codon.

Explanation:

The start codon initiates translation of the mRNA by the ribosome into a polypeptide. When the ribosome finds the start codon, it attaches to the mRNA and the first amino acid, methionine, is recruited. The ribosome then continues translating the rest of the mRNA until it encounters a stop codon that initiates the ‘knocking off of the ribosome from the mRNA.

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3 years ago
What’s the answer to this
den301095 [7]

Answer:

3 and 4 are most closely related.

5 and 6 are also most closely related.

7 0
3 years ago
Vitamins a and c, thiamin, calcium, and magnesium are considered _____.
tatyana61 [14]
Answer : micronutrients
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3 years ago
Normally, this region is imprinted in the sperm, but not the egg. This means that the DNA on the ____________ copy of the chromo
Nostrana [21]

Answer: The DNA on the paternal copy of the chromosome will be methylated at the imprinting center, while the DNA on the maternal copy of the chromosome will not be methylated in this region.

Explanation:

Chromosomes are DNA structures associated with proteins such as histones. They are found in the nucleus of cells and contain genetic information for the development and functioning of an organism. Human beings are diploid, meaning that they possess two copies of each of the 23 chromosomes (a total of 46).

Gametes, which are sex cells such as the sperm (produced by the male) and the egg (produced by the female) that are haploid. This means that they possess only one chromosome of each pair. During fertilization, a male gamete fuses with a female gamete to generate a zygote, which will give rise to a new human being. <u>This new individual will possess half of the genetic material from its father and half from its mother. Thus having a total of 46 chromosomes, 23 from each parent</u>.

Genetic imprinting modulates gene expression by chemical modification of DNA and/or modification of chromatin structure. Often, genetic imprinting causes a gene to be expressed only on the chromosome inherited from one of the parents. One example of imprinting is DNA methylation, which is a process by which methyl groups are added to DNA. <u>Methylation modifies DNA function when found in the promoter gene, repressing gene transcription. This means that a methylated gene will not be expressed</u>, that is, it will not produce a protein encoded by that gene. So, if a region of DNA is imprinted in the sperm cell, the paternal chromosome inherited from this sperm will be methylated in the genes of the offspring. And the offspring will only express the maternal copy inherited, which will not be methylated.

6 0
3 years ago
Why do many environmental agencies promote conservation of water even though a large portion of Earth's surface is covered with
zysi [14]
Because though there is a lot of available water, an ever shrinking 3% is freshwater, which comes from groundwater and streams. The ocean is salinated and in order for it to be fit to be used by humans for domestic needs or for drinking, it needs to undergo a huge desalination process which costs lots of money and time.
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