Answer: It is provided by the nuclear fusion.
Answer:
<em>The number of chromosomes is maintained through the process of mitosis during asexual reproduction. </em>
Mitosis can be described as a process in which a cell divides and produces two daughter cells which are exactly similar to the parent cell. The chromosome number of the daughter cells will be the same as the parent cells. No crossing over or recombination occurs during this type of cell division. Hence, mitosis is an effective way to maintain the chromosome number of organisms which reproduce asexually.
Answer: Very unlikely
Explanation:
Generally, point mutation can be easily reversed by another point mutation, so
before any changes occur in the amino acid sequence, it would have been corrected.
However, when point mutation occurs within the protein coding region of a gene it may results in the change of a single nucleotide to cause the substitution of a different amino acid (which renders the protein non-functional) as in the case of sickle-cell disease.
And this kind of point mutation is specifically called Missense mutation.
Above all, because point mutation is easily reversible, it is very unlikely to change the amino acid sequence of a protein
Answer:
Unbalanced force
Explanation:
According to Newton's second law of motion, any unbalanced force that is applied on a body will cause it to have some acceleration.
However, If the force is balanced like the net effect of one force is cancelled by the other, it will result in total force as zero, that will cause zero acceleration in the body.
Newton's second law of motion states:
F=ma
where m is mass and a is acceleration, so it means that is any of these factors is zero , the force will be zero, and hence force is zero only when it is cancelled by some force acting in opposite direction.
For example: When person is dragging the table with a force of 30 N on left side, while the other person is dragging the same table with same force on right side. The table will have zero acceleration.
Hope it help!
