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pantera1 [17]
3 years ago
8

In an unstable environment where growing conditions are constantly changing, which mode of reproduction in plants provides the b

est chance for survival, and why?
Sexual reproduction; it increases the chance of survival by producing many genetically identical offspring.

Sexual reproduction; it increases the chance of survival by producing many genetically identical offspring.

Asexual reproduction; it increases the chance of survival by introducing little genetic variation in offspring.

Sexual reproduction; it increases the chance of survival by introducing genetic variation in offspring.

Asexual reproduction; it increases the chance of survival by producing many genetically different offspring.
Biology
2 answers:
ASHA 777 [7]3 years ago
8 0
The first one cause it’s producing many of them that are identical
vivado [14]3 years ago
4 0

Answer:

The answer is D

Explanation:

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Infer How do dominant and recessive<br> factors interact? sc.7..16.1
Rama09 [41]

Answer:

The resulting characteristic is due to both alleles being expressed equally. An example of this is the blood group AB which is the result of codominance of the A and B dominant alleles. Recessive alleles only show their effect if the individual has two copies of the allele (also known as being homozygous) If you were to talk about dominant and recessive factors in human traits, such as brown/green eyes, brown would be dominant, only needing to be in 1 parent to pass down to the child. (i have no idea if this helps or not-- it's all i know.. sorry, ;w;)

Explanation:

6 0
3 years ago
What is the function of the primers in PCR? What is the function of the primers in PCR? They are the monomer building blocks fro
azamat

Answer:

<h2>They provide a 3’ end for the DNA polymerase.</h2>

Explanation:

Polymerase chain reaction (PCR) is an in-vitro method to making copies of a specific DNA sample in a very short time.  

Polymerase chain reaction was invented by Kary Mullis in 1983.

Primers are specific to the DNA which we want to replicate and they bind to the specific sequence which is complementary to it. Primers provide a 3’ end for the DNA polymerase.

3 0
3 years ago
Please help i need to turn this in
makvit [3.9K]

Answer:

Normal Strand: alanine - methionine - histidine
Mutated Strand: glutamine - cysteine - no third amino acid.

Explanation:

<h3>mRNA Structure</h3>

Messenger ribonucleic acid (mRNA) is the RNA that is used in cells for protein synthesis. It has a single strand made by the transcription of DNA by RNA polymerase. It contains four nucleotides: Adenine (A), Guanine (G), Cytosine (C), and Uracil (U).

<h3>DNA Replication</h3>

Before transcribing, we need to create the complementary strand of the DNA. We're going to write out the nucleotides of the complementary strand by matching the nucleotides in these pairs: (A & T) and (C & G).

              Normal Strand: GCA ATG CAC
Complementary Strand: CGT TAC GTG

Next, we can transcribe this to find our mRNA. We're going to do the same thing to the complementary DNA strand, but with Uracils instead of Thymines. So our pairs are: (A & U) and (C & G)

Complementary DNA Strand: CGT TAC GTG
                        mRNA Strand: GCA AUG CAC

You'll notice that the mRNA strand is almost exactly like the new mRNA strand, but with Uracil instead of Thymine.

<h3>Reading Codons</h3>

Each set of three nucleotides is known as a codon, which encodes the amino acids that ribosomes make into proteins. To read the codons, you need to have a chart like the one I attached. Start in the middle and work your way to the edge of the circle. Some amino acids have multiple codons. There are also "stop" and "start" codons that signify the beginning and ends of proteins.

mRNA Strand: GCA AUG CAC
Amino Acids:   Ala   Met   His

Our sequence is alanine, methionine, and histidine.

<h3>Frameshift Mutations</h3>

A frameshift mutation occurs when a nucleotide is either added or removed from the DNA. It causes your reading frame to shift and will mess up every codon past where the mutation was. This is different than a point mutation, where a nucleotide is <em>swapped</em> because that will only mess up the one codon that it happened in. Frameshift mutations are usually more detrimental than point mutations because they cause wider spread damage.

<h3>Mutated Strand</h3>

Let's repeat what we did earlier on the mutated strand to see what changed.

              Mutated Strand: CAA TGC AC
Complementary Strand: GTT ACG TG
---
Complementary DNA Strand: GTT ACG TG
                        mRNA Strand: CAA UGC AC
---
mRNA Strand: CAA UGC AC
Amino Acids:   Glu   Cys   X
---
Our amino acid sequence is glutamine, cysteine, and no third amino acid.

As you can see, removing the first nucleotide of the strand caused every codon to change. The last codon is now incomplete and won't be read at all. If this happened in a cell, the protein that was created from this mutated strand would be incorrect and may not function completely or at all.

5 0
2 years ago
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What is the type of nitrogen that plants and animals cannot use without it being converted to a different form?
Yuki888 [10]
The nitrogen is captured and converted into a form that is usable by plants in a process called

<span>nitrogen fixation</span>
8 0
3 years ago
Question 14(Multiple Choice Worth 2 points)
balu736 [363]

The answer is D. The Protista have very little in common with each other besides being unicellular and Eukaryota.

Protista is one of kingdom that consist of any eukaryotic that could not classified as plant, animal or fungi. Since the classification itself based on exclusion, protist group has much less similarity than other group. All protist is unicellular and eukaryote but other than that, they will have many difference in other aspect.

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3 years ago
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