Which of the following describes how dna provides evidence to support that life changes over time

Biology

1 answer:

Ket [755]3 years ago

8 0

Although all are true, it is B.

Vestigial structures indicate that the animals evolved from an ancient ancestor.

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13. The allele that results in the absence of a tail is autosomal recessive. From which parent do

PSYCHO15rus [73]

Answer:

a) both parents

Explanation:

autosomal recessive means that both copies of the "no tail" allele must be inherited in order to produce a dog with no tail, therefore the answer is both parents

5 0

3 years ago

In eukaryotes there are several different types of rna polymerase. which type is involved in transcription of mrna for a globin

mariarad [96]

In eukaryotes there are several different types of RNA polymerase. RNA polymerase II is involved in transcription of MRNA for a globin protein.

4 0

3 years ago

Is biotechnology always associated with genetic engineering? Explain your answer.

prohojiy [21]

Answer:

Yes, the biotechnology are associated with the genetic engineering as, the genetic engineering are the direct modification or manipulation of the organism which are using the biotechnology.

Basically, it the set of technologies which are used to modify the genetic cells including the transferring of the genes across the boundary to produced the organism. And with the help of biotechnology, new DNA are obtain by copy the genetic material by using the methods of DNA.

3 0

3 years ago

The coconut palm is now widely dispersed in the world because of ________.

Vedmedyk [2.9K]

Birds because they spread seeds

3 0

4 years ago

Which of the following explains why water is a good solvent for polar and ionic compounds?

Anni [7]

Hi there!

Electronegativity is the concept of how likely an atom is to attract the shared molecules in one of these bonds to itself. We know the molecule water is made up of two hydrogens and one oxygen. The electronegativity of hydrogen is 2.2, and oxygen 3.4. An ionic bond needs at least a difference in electronegativity of 1.6. As the difference is less than that, we can say that water is a covalent molecule. This then wipes out choice B, because it is not ionic, and C, as we have seen it is actually covalent.

Now, we can see the difference in electronegativity between oxygen and hydrogen is still 1.2. This means that while it is not at the point for there to be an ionic bond, there is still a difference in attraction, where the electrons will tend to favor the oxygen more and 'hang around it' more. As electrons are negatively charged, this means that the oxygen will gain a slightly negative charge. This then makes the molecule polar, because it now has a charge within the molecule. This means we have our answer, choice D.

In terms of hydrophobic molecules - they tend to be ones without a charge. (If you're interested in this kind of stuff, I'd search hydrophobic up, and possibly also look into hydrogen bonds).

Hope this helps! Feel free to ask me any other questions you have about this specific problem.

6 0

3 years ago