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geniusboy [140]
2 years ago
12

DNA is a double helix with many regions. Which evidence best explains the structure of DNA? (2 points)

Biology
1 answer:
Andrew [12]2 years ago
8 0

Answer:

A

Explanation:

the sequence of genes on a DNA molecules contain the instructions that code for protein

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If Luke pushes his sister in a wagon down the driveway that is 14 meters long and it takes 22 Newtons of force, how much work di
Juli2301 [7.4K]

Answer:

308 N\cdot m or 308 J

Explanation:

Work in physics is done when an object is moved due to an applied force. But you need to remember that work is only done if there is movement parallel to the direction of the force applied.

Work can be computed with the formula:

W=Fd

Where:

F = Force

d= distance

So your problem gives you:

F = 22 N (Newtos)

d = 14 m (meters)

All you need to do is plug in the values and multiply:

W = F x d

W = 22N x 14m

W = 308 N-m or 308 J (Joules)

8 0
3 years ago
How does the salinity in water change as you move from inland areas out towards to ocean? Be sure to include the phrase "brackis
garik1379 [7]

Answer:

The salinity of water increases as you move from inland areas out towards to ocean.

Explanation:

Salinity refers to the concentration of salt in the water. The salinity of water increases as you move from inland areas out towards to ocean because the ocean has high salinity than the inland areas. That is it can be said that the ocean contains brackish water. Brackish water has more concentration of salt than freshwater.

5 0
2 years ago
For this question, we will utilize a population of Martians that is in Hardy Weinberg Equilibrium. The dominant Martian phenotyp
Brrunno [24]

Answer:

d.0.48

Explanation:

When a population is in Hardy Weinberg equilibrium the <u>genotypic </u>frequencies are:

freq (AA) = p²

freq (Aa) = 2pq

freq (aa) = q²

<em>p</em> is the frequency of the dominant <em>A</em> allele and <em>q</em> is the frequency of the recessive <em>a</em> allele.

In this population of 100 individuals, 84 martians have the dominant phenotype and 16 have the recessive phenotype.

Therefore:

q²=16/100

q² = 0.16

q=√0.16

q = 0.4

And p+q=1, so:

p = 1 - q

p = 1-0.4

p = 0.6

The frequency of heterozygotes is:

freq (Aa) = 2pq = 2 × 0.4 × 0.6

freq (Aa) = 0.48

5 0
3 years ago
Help worth 20 points Which of these is the smallest
IRINA_888 [86]
Meteoroids are Smaller because they are fragments of a comet, or asteroid
6 0
2 years ago
Choose from three types of scientific workers (for example, biologists, chemists, and geographers) that you think could help sol
Ludmilka [50]

The biologist is the person who would be interested in determining the existence of any pattern or characteristics with in a species and relate it to the characteristics possessed earlier by the species.

7 0
3 years ago
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