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bonufazy [111]
3 years ago
6

What is a charge that improves a species' change of survival?

Biology
1 answer:
Sloan [31]3 years ago
4 0
First of all, it is a change, not a charge.
Phenotype is physical manifestation of gene(physical), not a change, so it is not phenotype.

Variation is a state of being genetically diverse, but it is not a change, therefore it is not variation.

Genetics is the name of a field, and it is not a change.

Adaption are changes of a population overtime, through natural selection.

It is adaptions
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The archaebacteria kingdom has been on earth for at least ________ years.
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Answer:

Archaea are found in the harshest environments on Earth, and are the oldest known organisms on Earth, appearing in the fossil record over 3.6 BILLION years ago

Explanation:

Hope this helps!

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2 years ago
Can anyone help me!?
ExtremeBDS [4]

Answer:

i believe its A because i studied this

Explanation:

4 0
3 years ago
Suppose a couple has come to see you to discuss the probability of their children having cystic fibrosis (CF). CF is known to be
m_a_m_a [10]

Answer:

The children that the couple may have a 25% chance of having cystic fibrosis and 75% chance of being carriers for the CF gene

Explanation:

We know that both parents are in the same situation. Let's start for example with the mother. She has one parent and one sibling with cystic fibrosis (CF). So, supposing that the allele of the gene that causes the disease is <em>"f"</em>,  as the disease is autosomal recessive, both, the parent and the sibling have the genotype ff.

Also, knowing that the other parent has a normal phenotype, but the sibling has CF, we deduce that the other parent of the mother must have a <em>Ff</em>.

So, <em>despite the mother's phenotype is normal, her genotype is Ff</em> (see the Punnett square 1) Couple's parents in the attached image). In other words, she is a carrier for the CF gene.

As the parents' situation is analogous, <em>we can deduce that the father also has a genotype Ff  </em>and is also a carrier for the CF gene.

Now, if we look at the Punnett square for them  (see the square 2) Couple in the attached image), we see that all their children will always have at least one copy of the CF allele, <em>f</em>.

More specifically, their children have 25%  chance of having cystic fibrosis and 75% chance of having a normal phenotype but being carriers of the CF gene.

6 0
3 years ago
A scientist at a chemical company designs and conducts an experiment to determine if a chemical made by the company is harmful t
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The scientist is being B. unethical
7 0
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Proteoglycans are a group of macromolecules formed from: a. proteins and glycosaminoglycans. b. proteases and glycosaminoglycans
Marianna [84]

Answer:

Proteins and polysaccharides.

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Proteoglycans are heavily glycosylated proteins. These proteoglycans are present in the extracellular matrix of the animal cells and acts as a lubricant for the cells.

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Thus, the correct answer is option (E).

3 0
3 years ago
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