All categories

2 years ago

1. Given the original DNA nucleotide sequence, which of the following is a mutated sequence showing a point mutation?

Biology

1 answer:

Naya [18.7K]2 years ago

3 0

Answer:

The correct answer is - b. Original: G C A T T A A C G A C A

Explanation:

Point mutation is the mutation where change takes place in one of the nucleotides or single base by one of three ways that are insertion, deletion, or substitution of the nucleotide. In insertion, one extra single base is added to the original sequence, In the deletion one of the single base pair is deleted from the single sequence, and in substitution one base is switched with the complementary base.

In all the options, there are more than nucleotide is altered except option B where T is altered with A and cause mutation.

Original sequence: G C A T T A A C G A C A

mutated sequence: G C A A T A A C G A C A

You might be interested in

Which statement regarding Bax and Bak, two members of the Bcl-2 family, is true?

vampirchik [111]

Answer:

Option D When activated, Bax and Bak form oligomers in the outer membrane of mitochondria, leading to the release of cytochrome c.

Explanation:

The proapoptotic genes are involved in the process of apoptosis. The antiapoptotic gene prevents apoptosis that is cell death. The proapoptotic genes are bax, bak, bad and bid. The bcl family genes are antiapoptotic genes. The process involved activation of apoptosis inside the cell is called intrinsic pathway of apoptosis.

The activation proapoptotic genes, Bax and Bak form oligomers in the mitochondria outer membrane. These pores in the mitochondrial membrane allows the release of cytochrome-c that further attaches with Apaf-1. This leads to activation of caspase 9 that further activates caspase 3, thus inducing apoptosis.

4 0

3 years ago

A genetic tendency toward efficient use of energy that results in below-average energy requirements and increased storage of cal

alekssr [168]

Thrifty metabolism

Thrifty metabolism is the genetic tendency toward efficient use of energy that results in below-average energy requirements and increased storage of calories as fat. Thrifty metabolism contributes to less weight lost when an obese person reduce the amount of his calorie intake even though there is changes in metabolism.

8 0

2 years ago

You get home from school and grab a bag of potato chips before settling onto the couch to binge watch your newest Netflix series

snow_tiger [21]

Answer:

Explanation:

Osmosis is the process in which the molecules of a solvent move from a region of low concentration to a region of higher concentration through a semi-permeable barrier.

While eating the chips, the salt content from the chips makes the surrounding solution of the cells to have an increase in salt concentration causing an hypertonic solution. An hypertonic solution is a solution that has more solute (salt) than the (solute in a) cell. This increase in salt concentration around the cells causes the cells to release water to neutralize the high salt concentration in the solution around the cell (in order to maintain homeostasis) which causes dehydration in the individual and hence making the individual to be thirsty. The body attempts to maintain balance by passing this excess salt out of the body in the form of urine hence the reason for the dark colour in the urine (because if the body doesn't rid itself of the high salt concentration, the cells could shrink and die as a result).

3 0

3 years ago

!!!!!!H-E-L-P!!!!!!!!!! How do index fossils help scientists establish how old rocks and other fossils are? In your answer, incl

ratelena [41]

Answer:

safari could help, learnt this a few years ago, totally forgot!!

Explanation:

:).

3 0

2 years ago

The pneumonia caused by Mycoplasma is referred to as _______ pneumonia because the disease is mild, the bacteria cannot be easil

AveGali [126]

Answer:

Atypical pneumonia

Explanation:

This is the type of pneumonia caused by uncommon microorganisms types and it’s usually very rare. This type of pneumonia has milder symptoms and can be caused by bacteria, fungi, Protozoa and virus.

It is also known as Walking pneumonia. It is very difficult to culture and can’t be easily detected.

4 0

2 years ago

Read 2 more answers