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Evgesh-ka [11]
3 years ago
13

During DNA replication, _____. a. four identical DNA molecules are produced each parental b. strand serves as a template for the

synthesis of a complementary c. strand replication begins at one end of the chromosome and continues d. all the way to the other end one daughter molecule ends up with two newly synthesized DNA strands
Biology
1 answer:
BaLLatris [955]3 years ago
5 0

Answer: Option B) each parental strand serves as a template for the synthesis of a complementary strand

Explanation:

In semi-conservative DNA replication,

- a parent double-stranded DNA splits in two.

- Each strand is then read by the enzyme, DNA polymerase, to ensure accurate replication of a newly synthesized strand

- the new strand contains nucleotides that are complimentary to free nucleotides present in the parent strand.

Thus, option B perfectly describes semi-conservative replication of dna

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In pea plants, the gene for the color of the seed has two alleles. In the following Punnett square shown below, the dominant all
Bogdan [553]
<h2>Question 1.</h2><h2>Answer:</h2>

The correct answer is option D which is 100%.

<h3>Explanation:</h3>

According to the description of Punnett square given in the question, there will be there will be two types of genotype and one type of phenotype which is yellow.

  • YY, homozygous dominant = Yellow Seeds.
  • Yy, heterozygous = Yellow Seeds
  • So the progeny will be 100% of yellow seeds.

Punnett square is also attached.

<h2>Question No.2.</h2><h2>Answer:</h2>

The correct answer is the option A which predicts the genotypic and phenotypic probabilities of possible.

<h3>Explanation:</h3>

<u><em>Punnett square is a way to determine the probable genotype of expected offspring by the genotypes of father and mother devised by Punnett.</em></u>

  • In this method, A square shaped table is constructed and the alleles of the gene of father/male are written on the top of tables, on the column.
  • The alleles of the mother are written in horizontal to square, in front of rows.
  • So the genotypes in the square box by multiplying row and column alleles will be expected genotype of an offspring.
  • The example is attached below.
<h2>Question no. 3.</h2><h2>Answer:</h2>

The correct answer is option C which is  1 = TT; 2 = Tt; 3 = Tt; 4 = tt .

<h3>Explanation:</h3>

The Punnett square is made by the description given in the question.

There are total 4 boxes. In box number 1 which is on top left genotype is TT and in box 2 which is on top right genotype is Tt. In box 3, the genotype is Tt and in box 4, the genotype is tt.

So according to the given Punnett square information in option C is correct one.


8 0
4 years ago
How is phosphorus NOT returned to the abiotic portion of the environment?
zubka84 [21]

Answer:

it's a hope it helps you out

4 0
3 years ago
Which statement best defines a cell.
Whitepunk [10]
D) The basic unit of structure and function in all living things
8 0
3 years ago
WILL GIVE BRAINLIEST!!!!!!
denis23 [38]

I believe the punnet square is showing the genotypes of the F2 generation. If that is true, the answer would be 3 red : 1 white. This is because the four genotypes are RR, Rr, Rr, and rr. Out of those, 3 contain the dominant allele R that codes for red, while only one contains both recessive alleles that code for white. Hope this helps!


6 0
3 years ago
Read 2 more answers
Which proteins is used as a chemical defense at body surfaces?
UNO [17]

Answer: Antimicrobial proteins.

Explanation:

Antimicrobial proteins are the type of proteins produced by the keratinocytes on the body surfaces. These proteins acts as the barrier and kills the microorganism which is trying to enter the body.

These are larger proteins containing more than 100 amino acids. They are often lytic in nature.

The cell membrane of the microbes is disrupted by the action of these amino acids or proteins on them.

5 0
4 years ago
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