What type of mutation is represented by the following sequence? Original: 123456 Mutated: 154326

A. Breakage

B. Deletion

C. Insertion

D. Inversion

Answer Explanation:

An inversion mutation is represented in the sequence 1 5 4 3 2 6. An inversion error is a type of mutation where an entire sequence of DNA is reversed. In this case, 2 3 4 5 has been reversed to 5 4 3 2.

Breakage, choice A, in a gene can mess up its function entirely or lead to a translocation of genetic information. Choice B, deletion, is when a section of DNA is omitted or lost.

Choice C, Insertion, is when an extra base pair is added to a DNA sequence. Deletions and insertions can lead to a frameshift effect where entire sequences are thrown off because one nucleotide is wrong.

This could result in coding for the wrong amino acid and non-functioning proteins.

Therefore, the Correct Answer is D.

Q #1: Which of these body parts does NOT produce melanin?

A. Hair

B. Nails

C. Skin

D. Iris

Answer Explanation

While melanin can be found in nails, it is not produced there. Melanin is the pigment that provides color to skin, hair, and eyes. Although the specific coloring of one's skin, hair, and eyes are genetically determined. environmental factors such as sun exposure can increase melanin production in the skin to help protect it from damage.
Q #2: Which of the following is true regarding adipocytes?

A. They are involved in the secretion of glucose.

B. They are responsible for storing the fat that is found in adipose tissue

C. They are critical in the digestive breakdown of fat

D. They are the foundational element of muscles

Answer Explanation

Adipocytes are primarily seen in adipose or fat tissue. Their primary function is the storage of fat Adipocytes play a crucial role in maintaining proper energy balance, storing calories in the form of lipids, and mobilizing energy sources in response to stress. They are not involved in the digestion of fat or the secretion of glucose, nor are they the foundational element of muscles
Q #3: Which of the following is an example of a chemical change?

A. Releasing compressed gas to make a bottle-rocket launch

B. Adding water to clay to make slip

C. Crystalizing honey to make candy

D. Including baking soda in a recipe to make it less sour

Answer Explanation

A chemical change involves a chemical reaction and new substances are produced. When baking soda is added to something sour (acidic) it neutralizes the acid and forms new molecules, in this case carbon dioxide and water. A physical change does not produce new substances. Phase changes such as evaporation and sublimation are physical changes. Changing the ratio of ingredients in a mixture, like adding more water to clay, does not change it chemically, but it can change some of the mixture's physical properties.

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What type of mutation is represented by the following sequence? Original: 123456 Mutated: 154326

More Questions on TEAS 7 Science

Q #1: Which of these body parts does NOT produce melanin?

Answer Explanation

Q #2: Which of the following is true regarding adipocytes?

Answer Explanation

Q #3: Which of the following is an example of a chemical change?

Answer Explanation

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