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valkas [14]
3 years ago
11

What are the nitrogenous bases found in dna?

Biology
1 answer:
REY [17]3 years ago
6 0
<span> Adenine, Guanine, Thymine, and Cytosine :)</span>
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Which virus is correctly matched with its structure?
yan [13]

Answer:

B. polio—polyhedral shape

Explanation:

A virus is a small parasite which cannot self reproduce. For a virus to produce more viruses, it uses the cell to duplicate itself. Viruses contain RNA or DNA as their genetic material.

Poliovirus is composed of an RNA genetic material and it is responsible for Polio. Polio leads to paralysis and is transmitted through contaminated water or food, or contact with an infected person.

The shape of Poliovirus is formed by polyhedral (many-sided) shell or capsid.

5 0
2 years ago
Read 2 more answers
Name the process by which soil is formed from rocks? ?
r-ruslan [8.4K]

Weathering and soil formation.

3 0
3 years ago
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During embryonic development, the vertebral column is replaced by the notochord.
Reptile [31]

Hello! The answer is false.

It is actually the opposite. The notochord is a primitive axial skeleton, and in humans, it disappears. It eventually becomes part of the vertebral column, which is the backbone that we have today.

Hope this helps!

3 0
3 years ago
Anyone good at Biology could you give me a helping hand please!
andriy [413]
1. Anaphase. In <span>Anaphase the sister chromatids separate from each other to the opposite sides of the cells.

2. </span>Chromosomes would not separate into two nuclei. <span>Mitosis is a process cell division, where one cell divides into two identical cells.
</span>
3. Metaphase I. <span>Meiosis prophase I is the phase in which chromosomal crossing over occurs. The phase after prophase I is metaphase I.

4. </span>Its body cells would have 36 chromosomes, and its gametes would have 18 chromosomes. <span>In the gametes, there are half of the number of chromosomes present in the body cell.

5. </span><span>A species has to adjust rapidly to a changing environment. To adjust to the environment, crossing over is necessary, and it does not occur in mitosis, but meiosis.

6. 50 percent. 
Parents:          Yy      x     yy
Offspring:    Yy    Yy    yy   yy
50 % is Yy  and 50% is yy.

7. </span><span>One parent had white eyes and the other was heterozygous for eye color. The ratio in the offspring is 50-50. The only possibility is the following:
Parents:       Rr     x     rr
Offspring   Rr    Rr   Rr   Rr

8. </span><span>Their fur will be a mixture of red and white hairs. The offspring will be heterozygous. They will have alleles for both red and white hairs and both will be expressed.
</span>
9. Not enough information.

10. <span>Both of the parents' genotype must have been Pp. The genotype of the white plant is pp since it is recessive:
Parents:        Pp     x     Pp
Offspring:   PP   Pp   Pp   pp
One of the four is white.</span>

4 0
3 years ago
Transcribe the following DNA sequence (use a different color for the mRNA strand, and remember that RNA has uracil instead of th
Fed [463]

Answer:

C U A G C U A U G G U A A G C C G C G U A U G A A G C

Explanation:

this is the complementary strand in mRNA.

A=U

G=C

C=G

T=A

this is the answer key to any mRNA strand.

Hope this helps! :)

8 0
2 years ago
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