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yawa3891 [41]
3 years ago
15

Which statement best explains how two identical copies of a very large molecule can be made during DNA replication?

Biology
2 answers:
Bas_tet [7]3 years ago
6 0

Answer: B. DNA polymerase checks for errors in base pairing as it helps new DNA strands form.

Explanation: DNA polymerase is an enzyme that catalyzes the synthesis of a new DNA strand from a DNA template. This process is known as replication. During replication, DNA polymerase rejects incorrect bases before the phosphodiester bond is formed because it has a 3' -> 5' exonuclease activity that double checks every nucleotide that is added to the growing strand. This check allows the enzyme to remove a newly added mismatched base pair.

choli [55]3 years ago
5 0

Answer:

b

Explanation:

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Horses went extinct in North America and did not return until they were ferried in boats by European settlers (no land mammal ca
lys-0071 [83]

Answer:

sweepstake route

Explanation:

From the view of the horses, the ocean barrier would be seen as a  <u>sweepstake route</u>.

<em>By definition, the sweepstake route refers to a rather difficult or dangerous path through which animals can move from one place to another. No animal would take this path ordinarily except by pure chance or when events leave no other option.</em>

In the illustration, no horse would engage in an adventure of swimming across the ocean to North America until the European settlers decided to ferry them across. Hence, to the horses, the ocean barrier represents a sweepstake route.

6 0
3 years ago
If the egg cell of animal has 25 chromosomes,how many chromosomes would be in a heart cell?
diamong [38]

Answer:

50

Explanation:

egg cells and sperm cells contain half of the chromosomes of a regular cell in an organism, so the number of chromosomes in a heart cell must be double of the chromosomes in a egg cell.

5 0
3 years ago
Suppose you have monohybrid flowers in your garden and find that they produce black seeds to brown seeds in the ratio of 3:1. If
Dvinal [7]
Hybrid = having one recessive and one dominant allele
This means that all of the flowers must have the genotype Bb.
Knowing this, let's make a Punnet Square.

\begin{tabular}{ l c } & B \ \ \ \ b\\ B & \boxed{BB}\boxed{Bb} \\ b & \boxed{Bb\ }\boxed{\ bb} \\ \end{tabular}

As you can see, 3 of these are going to have the dominant trait and 1 is going to have the recessive trait. This corresponds to our 3:1 in our question, meaning that the black seeds must be dominant and the brown ones recessive.

Because they are dominant, the genotype for black seeds could be BB <em /><em>or</em> Bb.
4 0
3 years ago
Read 2 more answers
Mutations in what class of genes have probably been responsible for many of the changes leading to the great diversity of life e
vampirchik [111]
Yes but cells also help get life to where it is right now and cells will also be changing genes connect with who we are and what we are and without those genes and cells we wouldn't be who we are today. genes do regulate mitosis but not for aerobic respiration genes give use our characteristics like girl,boy. DNA does help repair genes like per say you got a scrape on your leg or arm the DNA would clot so that the bleeding would stop and that would cause it to scab over.

8 0
3 years ago
What is the most interesting or surprising thing you learned about the flow of energy through food chainss?
ss7ja [257]
Tobacco is bad for you
6 0
2 years ago
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