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kykrilka [37]
3 years ago
13

At what stage in C. elegans does cell differentiation occur?

Biology
2 answers:
german3 years ago
8 0
I believe the answer would be a zygote as that is when the sperm and the egg have combined and are beginning to transfer sex chromosomes. 
vlabodo [156]3 years ago
5 0

Answer: Zygote.

Explanation: The differentiation takes place at the stage of zygote. Cell differentiation is the process of development during which the embryonic cell get specialized and diverse structure arises.

Once an egg is fertilized and develops into a zygote, it further divides into multiple cells, triggering the process of cell differentiation.

Every cell of the body is equipped for a special process. The differentiation of cell to form tissue and then differentiation in tissues to form organ and then finally into a whole organism.

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How to determine the inputs and outputs of carbon dioxide in the atmosphere.
liraira [26]

Answer:

change in concentration maybe...

5 0
3 years ago
2. Which stage of interphase do we see DNA being replicated?
Mkey [24]

Answer:

C

Explanation:

Synthesis is when DNA is being replicated.

Additional information:

  • Growth 1: Just a growth stage
  • Growth 2: Known as a checkpoint stage where the cell gets ready for mitosis.
4 0
3 years ago
Are RNAs processed before translation is able to occur in Prokaryotes? Do only mRNAs undergo processing and maturation in Eukary
raketka [301]

Answer: RNAs are not processed before translation in prokaryotes, this process only takes place in eukaryotes.

Explanation:

Messenger RNA or mRNA is a single-straded ribonucleic acid that transfers the genetic information from the DNA (deoxyribonucleic acid) molecule of the cell nucleus to a ribosome (which are the machinery responsible for protein synthesis) in the cytoplasm. mRNA determines the order in which the amino acids of a protein will be joined and acts as a template or pattern for the synthesis of that protein. To accomplish this, the DNA molecule must be transcribed into an RNA molecule, which is used for protein synthesis.

The messenger RNA obtained after transcription is known as primary transcribed RNA or precursor RNA or pre-mRNA, which in most cases is not released from the transcription complex in a fully active form, but in eukaryotes it must undergo modifications before it can perform its function (RNA processing or maturation). These modifications include:

  • Elimination of fragments (splicing): In most cases, the <u>mRNA undergoes the removal of internal, non-coding sequences called introns, and the connection of exons. This does not occur in prokaryotic cells</u>, as they do not have introns in their DNA.
  • Protection by CAP: <u>Addition to the 5' end of the structure called "cap" or "capping"</u>, which is a modified guanine nucleotide, 7-methylguanosine triphosphate, via a 5'-5' triphosphate linkage, instead of the usual 3',5'-phosphodiester linkage. This cap is necessary for the normal RNA translation process and to maintain its stability.
  • Polyadenylation signal: <u>Addition to the 3' end of a poly-A tail, a long polyadenylate sequence, whose bases are all adenine</u>. Its addition is mediated by a sequence or polyadenylation signal (AAAAAA), located 11-30 nucleotides upstream of the original 3' end. This tail protects the mRNA from degradation, and increases its half-life in the cytosol, so that more protein can be synthesized.

The mature mRNA (in eukaryotes) is transferred to the cytosol of the cell through pores in the nuclear envelope. Once in the cytoplasm, ribosomes are coupled to the mRNA. However, in prokaryotes, ribosome binding occurs while the mRNA strand is being synthesized. After a certain amount of time, the mRNA is degraded into its component nucleotides by ribonucleases. So, the transcription and translation processes are carried out in a similar way as in eukaryotic cells but they occur simultaneously. But, the fundamental difference is that, in prokaryotes, the messenger RNA does not undergo a maturation process and, therefore, no cap or tail is added and no introns are removed. Moreover, it does not have to leave the nucleus as in eukaryotes, because in prokaryotic cells there is no defined nucleus.

So, RNAs are not processed before translation in prokaryotes, this process only takes place in eukaryotes.

6 0
3 years ago
Parents with traditional gender schemas are especially likely to raise children who show signs of
oksian1 [2.3K]
Parents with traditional gender schemas are especially likely to raise children who show signs of gender-typing. The term gender-typing defines the acquisition of a traditional masculine or feminine role. Example is a<span> boy who consistently exhibits traditionally masculine interests and behavior patterns.</span>
6 0
3 years ago
The amplitude of a wave is related to what wave characteristic?
natka813 [3]
Wavelength<span> is the distance between one point on a wave to a point on the same part of the next wave. </span>Wavelength<span> is usually measured from crest to crest or trough to trough. The crest is the highest point of the wave, and the trough is the lowest point. Amplitude is the maximum displacement of the wave.</span>
8 0
3 years ago
Read 2 more answers
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