NEET BIOLOGY

Detailed explanation-1: -Genetics is the scientific study of genes and heredity-of how certain qualities or traits are passed from parents to offspring as a result of changes in DNA sequence.

Detailed explanation-2: -Genetics is the study of heredity. Gregor Mendel’s work in the middle of the 19th century is where genetics got its start. Mendel had proposed that characteristics were passed down as distinct units of inheritance.

Detailed explanation-3: -Patterns of inheritance in humans include autosomal dominance and recessiveness, X-linked dominance and recessiveness, incomplete dominance, codominance, and lethality. A change in the nucleotide sequence of DNA, which may or may not manifest in a phenotype, is called a mutation.

Detailed explanation-4: -Inherited (or hereditary) variants are passed from parent to child and are present throughout a person’s life in virtually every cell in the body. These variants are also called germline variants because they are present in the parent’s egg or sperm cells, which are also called germ cells.

Detailed explanation-5: -Genetics and genomics both play roles in health and disease. Genetics refers to the study of genes and the way that certain traits or conditions are passed down from one generation to another. Genomics describes the study of all of a person’s genes (the genome).