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Ne4ueva [31]
3 years ago
15

I need help on this one too I have 9 so there will be more and this is for algebra 1 thanks

Biology
1 answer:
LenKa [72]3 years ago
4 0
Domain: [-3,4]
Range:[-3,2]
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Explain the difference between a scientific theory and a scientific law
faust18 [17]
A theory is not proved yet, is based on hypotesis; a scientific law is something that has already bean proved scientifically
7 0
2 years ago
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In a population, surrounded with dark gray rocks, there lived 2 types of beetles, a gray beetle and a white beetle. In the start
Svetlanka [38]

Directional selection favors one of the extreme phenotypes over the other one. <u>Option C is correct</u>. Natural selection is the evolutive force, and 0.40, 0.40, and 0.20 are the new genotypic frequencies.

<h3>What is directional selection?</h3>

Directional selection is one type of natural selection. Let us remember that natural selection is an evolutive force.

Directional selection increases the proportion of individuals with an extreme phenotypic trait.

There must be a selective pressure or environmental pressure acting on populations to lead the species to increase the number of individuals expressing that extreme phenotype.

This selection presents more frequently in those cases in which interactions between living organisms and the environment modify in the same direction.

In the exposed example,

  • two original phenotypes ⇒ gray and white
  • substrate color ⇒  dark gray rocks
  • environmental pressure ⇒ birds preying on beetles

- Grey beetles managed to camouflage with rocks since their gray color was similar.

- White beetles were exposed on the dark gray rocks, so they were easily seen by birds.

- Predation by birds was an environmental pressure that had a stronger influence on the white phenotype.

Natural selection favored gray-colored beetles, who could survive and reproduce.

Assuming a diallelic gene expressing complete dominance codes for beetles color, we can suggest that the frequency of one of the homozygous genotypes increased, while the other decreased to near cero. Heterozygous individuals kept the allele coding for the white phenotype.

Among the options, <u>C is the correct one</u>. Natural selection is the evolutive force, and 0.40, 0.40, and 0.20 are the new genotypic frequencies.

You can learn more about natural selection and  directional selection at

brainly.com/question/9830102

brainly.com/question/12226774

#SPJ1

7 0
2 years ago
QUICK HELP!!!!!!! Choose an organism that you are familar with, and explain how the three parts of the cell theory relate to tha
Lana71 [14]
You can pick any organism and relate most of the cell theory to them. For instance, all living organisms are composed of cells. This is part of the cell theory and all living organisms are just that, made of cells. Another part of the cell theory that can be applied to any organism is that hereditary information is passed on from cell to cell. When we have Offspring, we pass off our hereditary information to our offspring. Lastly, part of the cell theory states that cells arise from pre-existing cells. I was born from a mother and a father so as a human I exist because I came from another human.
3 0
3 years ago
Why did the f1 offspring of mendel's classic pea plant crosses always look like one of the two parental varieties?
stiv31 [10]
The F1 offspring of Mendel's classic pea plant crosses always looked like one of the two parental varieties because he crossed a homozygous dominant plant with a homozygous recessive plant so each plant received one recessive allele and one dominant allele. All of the plants looked like one plant because the dominant allele overshadowed the recessive allele
5 0
2 years ago
Write five facts on motion and Newton's First Law.
mariarad [96]

Answer:

Hello There!!

Explanation:

1.Newton's first law states that, if a body is at rest or moving at a constant speed in a straight line, it will remain at rest or keep moving in a straight line at constant speed unless it is acted upon by a force. This postulate is known as the law of inertia.

2.A stationary object with no outside force will not move.

3.With no outside forces, a moving object will not stop.

4.An astronaut who has their screwdriver knocked into space will see the screwdriver continue on at the same speed and direction forever.

5.An object at rest stays at rest.

hope this helps,have a great day!!

~Pinky~

8 0
2 years ago
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