Answer:
Deletion mutation usually takes place due to the errors in the process of DNA replication . DNA polymerase slips off on the template strand due to which that part of the DNA is not coded in the daughter strand.
It can skip from one nucleotide (point mutation) to an entire gene. Point deletion can result in frame-shift mutation if it takes place in the beginning or middle of the gene. However, if it takes place at the end of the gene then it may cause no harm.
For example, let us assume the original sequence of DNA as ATG-AGT-CGT-ATA-TAA. It will result in the formation of methionine, serine, arginine, isoleucine, and STOP codon.
Point deletion at the end of the gene results in ATG-AGC-GTA-TAT-AA sequence. Now it will code for methionine, serine, valine, and tyrosine as AA will not code for anything. Hence, the sequence of the protein remains the same.
Hence, if deletion mutation takes place at the last or stop codon of the gene then it will cause no harm or change in the protein sequence. However, if it takes place before that then it may result in frame-shift mutation and thus a mutated protein.
Answer:
1. Answer: Light can travel in a vacuum, and its speed is constant if the source is moving or stationary.
Light travels at constant speed in vacuum even if the source is moving or stationary. If the source is moving, the apparent frequency/ wavelength changes.
The ability to identify the specific location of skin touch in two different areas is communicated through sensory pathway .
<h3>What is sensory pathway?</h3>
The cerebral cortex or the cerebellum are the two destinations of the brain, and sensory pathways are the channels by which sensations or impulses travel from sense organs or receptors to the response centers there. While cerebellar impulses are important in coordination functions, cerebral cortex impulses enter through the thalamus and travel to the conscious portion of the brain.
Ascending and descending tracts make up the majority of the sensory pathways.
Learn more about sensations with the help of the given link:
brainly.com/question/27818707
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