Based on scientific research, which statement best describes mutations?

Answers

Answer 1

Answer:

Answer:

A Mutation occurs when a DNA gene is damaged or changed in such a way as to alter the genetic message carried by that gene. A Mutagen is an agent of substance that can bring about a permanent alteration to the physical composition of a DNA gene such that the genetic message is changed.

Explanation:

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Which of the following will occasionally produce a duplicate gene?A) Chromosome replication during mitosisB) Crossing-over during meiosisC) Neutral mutation during transcription D) Genetic drift during reproduction
What would happen to other organisms if prokaryotes did not recycle nutrients?
Would happen if the blood fails to regulate temperature or defend against pathogens? A) Enhanced immune response B) Weakened immune response C) Increased blood circulation D) Improved blood clotting
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Review the image of the earthworm. Which of the following best describes the characteristics of the earthworm? Select all that apply (2 apply)From the Phylum Annelida
Displays Radial Symmetry
Has a true coelom
Is not segmented

Answers

The characteristics of earthworm from the listed choices are; the Phylum Annelida and also they has a true coelum.

Earthworms are soft-bodied, segmented worms, and is only a few inches long. it is hugely important for agriculture and plays an important role in keeping soil productive, facilitating aeration, compaction and water infiltration and producing organic matter to increase crop growth. It is a segmented worm belonging to phylum Annelida, has a streamlined body with no antennae, they also have true coelum, and has circular muscles that surround each body segment among other characteristics.

I think the correct answers from the choices listed above are the first and third options. The characteristics of an earthworm are from the Phylum Annelida and has a true coelom. Other characteristics are that it displays a bilateral symmetry and is segmented.

2.If you are working as a forensic scientist and are given an unknown powder from a crime scene, what would you hope to find out about the powder?3. You find that the unknown powder contains the illegal drug cocaine. If someone where to ask you to determine the purity of the substance, what would they mean? Why is purity important in crime investigations?

4.Of the controlled substances, which schedule of drugs is the average person most likely to have in their homes? How are the controlled substances in this group different from those in the other schedule levels?

Answers

If you are working as a forensic scientist and are given an unknown powder from a crime scene, what would you hope to find out about the powder?

If I am working as a forensic scientist and I am given an unknown powder, I would analyze this and hope to find out where did this belong.

You find that the unknown powder contains the illegal drug cocaine. If someone where to ask you to determine the purity of the substance, what would they mean? Why is purity important in crime investigations?

The purity of the substance would mean that how much of the main component of cocaine is present in this powder. Purity is important in crime investigations because it will help you determine how much of the main component is present in that substance, the main component is the active ingredient of that substance.
Of the controlled substances, which schedule of drugs is the average person most likely to have in their homes? How are the controlled substances in this group different from those in the other schedule levels?

The schedule of drugs that is mostly present at home is antibiotics.

1.If I am working as a forensic scientist and I am given an unknown powder, I would analyze this and hope to find out where did this belong.

2.The purity of the substance would mean that how much of the main component of cocaine is present in this powder. Purity is important in crime investigations because it will help you determine how much of the main component is present in that substance, the main component is the active ingredient of that substance.

3.The schedule of drugs that is mostly present at home is antibiotics.

many scientists are concerned that the Ogallala aquifer in the united states is being depleted at an alarming rate ? what would most likely be a major effect on this aquifer running dry ?

Answers

This can cause other organisms that relay on this specific aquifer to find other sources of water or die.

An aquifer is actually an underground layer of water that contains permeable rocks, gravel, sand etc. the water can be brought to the surface by making a water well. Hydrogeology is the study of aquifers and the way of water flow in the aquifers. The depth of the aquifers differs from area to area and the aquifers that are closest to the surface are used for drinking and irrigation purposes.

Answer:

(A) Many crops would die because irrigation water would be limited

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Thomas records the masses of several rocks as 7.40 g, 7.85 g, 7.60 g, and 7.40 g. What is the mode of Thomas’s data set?

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Basing on the data gathered by Thomas we can say that the mode of the data gathered is 7.40 grams. This is because mode of the date set is define as the response that has the greatest or the highest number of tallied results. Since 7.40 grams has two tallied results and other number has only one.

Answer:

Explanation:

Edge2020

What is the difference between a autotroph and a heterotroph

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an autotroph is an organism that prepares its own food using simple organic materials whist a heterotroph is an organism that cannot prepare its own food but depends on other organisms for survival.

Autotroph: an organism that is able to form nutritional organic substances from simple inorganic substances, such as carbon dioxide

Heterotroph: an organism deriving its nutritional requirements from complex organic substances

Which gland sits atop each kidney?A. adrenal
B. thymus
C. pituitary
D. pancreas

Answers

The adrenal gland sits atop each kidney

What is the adrenal gland

The adrenal glands are small, triangular-shaped endocrine glands located on top of each kidney. They are composed of two parts: the outer adrenal cortex and the inner adrenal medulla.

The adrenal glands play a crucial role in producing and releasing various hormones that are essential for regulating metabolism, responding to stress, maintaining fluid balance, controlling blood pressure, and supporting immune function.

The hormones produced by the adrenal glands include cortisol, aldosterone, adrenaline (epinephrine), and noradrenaline (norepinephrine).

Read more on adrenal glands here brainly.com/question/1406904

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The adrenal glands sit atop the kidneys

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