Download Ans. Our cell contains 23 pairs of chromosome and it is inherited as

FAQs
1. How are genes inherited?
Ans. Our cell contains 23 pairs of chromosome and it is inherited as one pair from each
of our parents, which means that the sperm and egg receive 23 chromosomes through
a complex process of cell division called as the meiosis.
2. Where is DNA found?
Ans. Most of the DNA in a human cell is found in the nucleus, but DNA is also located
in the mitochondria of the cell. In viruses and bacteria, DNA is “packed” differently to
reflect the different needs of those organisms.
3. What are genetic disorders?
Ans.- A genetic disorders is a disease caused in whole or in part by a change in the
DNA sequence. It can be caused by a mutation in one gene, by mutations in multiple
genes, by a combination of gene mutations and environmental factors or by damage to
chromosomes.
4. What is the Human Genome Project?
Ans.-The Human Genome Project is a project to identify all the genes in the human
DNA.
5. What is Genomics?
Ans.-It is a new term that describes the study of all the genes in a person, as well as
interactions of those genes with each other and with the environment.
6. What is genetics?
Ans: The term genetics is derived from the Greek word ‘gen’ which means to become
or to grow in to something. So, the science of inheritance is called ‘genetics’. Genetics
is the branch of science which deals with the study of process of inheritance.
7. What is Mutation?
Ans: Mutation is any change in the genetic material that is heritable.
8. Mention about sex-linked traits.
Ans: Sex –linked traits are controlled by loci on sex chromosome ; the term sex-linked
simply refers to the fact that these loci are located on the x or y chromosome.