<h3>
<u>Appropriate</u><u> </u><u>Answer</u><u>:</u></h3>
Nucleus is the control centre of the cell and manages all the cellular activities taking place inside the cell. It consists of four parts :-
- Nuclear membrane,
- Nucleoplasm,
- Chromatin material and
- Nucleolus.
The Chromatin material(Condensed - Chromosome) stores the cell's DNA which is transmitted to next generation.
Answer: Amoeba are living even though they have one cell
Explanation:
DNA replication is the process by which a double stranded DNA molecule is copied to produce an identical DNA molecule. The process takes place in the nucleus of a cell and is undertaken by enzyme DNA polymerase. It is the first stage of the central dogma of life then followed by transcription process and the translation. Translation is the process that occurs after DNA replication where the DNA molecule formed from replication is used as a primer for the formation of a messenger RNA.
Natural selection is a process of adaptation by an organism to the changing environment by bringing selective changes to its genotype or genetic composition.
Artificial selection, also called selective breeding, is the process where humans identify desirable traits in animals and plants and use these traits to develop desirable phenotypic traits by breeding.
Some examples of natural selection include the selection of long-necked giraffes and the changes in the size and shape of beaks of birds according to their feeding habits.
Some examples of artificial selection include dog breeding to produce new breeds of dogs and cross-breeding in cash crops like wheat and rice.
