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Zolol [24]
3 years ago
15

What is one way that changes can occur in a dna sequence

Biology
2 answers:
UNO [17]3 years ago
8 0

Answer:

Mutation. A mistake made while DNA copies which causes changes in DNA

Explanation:

BabaBlast [244]3 years ago
8 0

Answer: Mutation

Explanation: Mutation is a permanent change in the nucleotide sequence of a DNA. This change occurs during replication where one or more base pairs is either substituted, inserted or deleted in the nucleotide sequence of a DNA. These alterations in the DNA sequence produce permanent changes in the genetic information encoded in the DNA. Substitution mutation occurs when one or more base pairs are replaced by another. Insertion mutation occurs when one or more base pairs are added in a nucleotide sequence while deletion mutation occurs when one or more base pairs are removed from a DNA sequence. When these mutations are not adequately repaired by the DNA repair system, these will lead to production of an RNA with an altered nucleotide sequence and will result in the production of a protein with an altered amino acid sequence. The alteration in the amino acid sequence of the protein will result in loss of or altered function of the protein and will ultimately lead to the expression of a different trait in the organism.

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Match each of the following muscles with its correct description.
Alexus [3.1K]
A2
B4
C1
D3
I think sorry if I get one wrong
7 0
3 years ago
A preganglionic sympathetic fiber traveling to the abdomen would synapse in which structures?
juin [17]

Answer:

Answered below.

Explanation:

The nerve fibres of the autonomic nervous system that connects the ganglia to the the central nervous system are called preganglionic fibres. They are divided into sympathetic preganglionic fibres and parasympathetic preganglionic fibres and both have acetylcholine as their neurotransmitter.

The sympathetic preganglionic is shorter compared to the parasympathetic preganglionic fibres. They originate from the hypothalamus and brainstem and project to the ganglia non the spinal cord. A ganglion is a cluster of nerves outside the central nervous system.

The preganglionic sympathetic fibres originating from T1-T2 innervate the cervical ganglion which innervates the muscles of the pupils (dilators).

The postganglionic fibres originating from the preganglionic fibres of T11-L3 passes through splenic, celiac and mesenteric ganglia to innervate the kidneys and renal vessels.

3 0
3 years ago
Mengapakah tabung didih dibalut dengan kertas hitam?​
leva [86]

Answer:

supaya tak meletup

Explanation:

sebab hitam dapat menghalang cahaya matahari daripada kena ke tabung didih agar tidak terlebih panas dan menyebabkan letupan

4 0
3 years ago
1.) A person walks 12.5 km in 1.9 h. What is the person's<br> average velocity in km/h and m/s?
Artemon [7]

Answer:

1. 6.56 km/hr

2. 1.83 m/s

Explanation:

The average velocity/speed can be calculated using the formula;

Average speed/velocity = distance/time

According to the information provided in the question, distance = 12.5km, time = 1.9h

Average velocity in km/hr = 12.5/1.9

= 6.578

= 6.56km/hr

However, in order to calculate the average speed in m/s, we have to convert distance in km to m, and time in hour to seconds.

1km = 1000m

12.5km = 12.5 × 1000

= 12500m

1 hour = 3600seconds

1.9hours = 1.9 × 3600

= 6840seconds

Average velocity = 12500/6840

= 1.827

= 1.83m/s

7 0
3 years ago
The diagram provided shows the carbon and nitrogen flow through a man-made mussel bed in the ocean. What evidence would support
yKpoI14uk [10]

Answer:

c

Explanation:

3 0
3 years ago
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