Class 9 | Heredity and Variation

The passing on of physical or mental characteristics genetically from one generation to another.

A thread-like structure of nucleic acids and protein found in the nucleus of most living cells, carrying genetic information in the form of genes.

A change in the DNA sequence of a gene or chromosome.

all carrier

The diversity of alleles and genes within a population or species.

A segment of DNA that carries genetic information and determines a specific trait.

Absence of hair on arms

The physical or observable characteristics of an individual, resulting from the interaction of its genotype with the environment.

50% carrier and 50% sufferer

Thymine

The genetic makeup of an individual, including the combination of alleles for a given trait.

Watson and Crick

Frederick Miescher

Turner syndrome

Traits that are expressed when only one copy of the gene is present in an individual's genotype.

Leber hereditary optic neuropathy

Deoxyribonucleic acid, a molecule that carries the genetic instructions used in the growth, development, functioning, and reproduction of all known living organisms and many viruses.

rRNA

A type of reproduction that involves the fusion of gametes from two parents, resulting in offspring that inherit traits from both parents.

Yellow colour of seeds

White colour of flowers

Free ear lobe

Haemophilia

50% normal and 50% carrier

telocentric

The diversity of alleles and genes within a population or species.

The differences in physical or mental characteristics among individuals of the same species.

Traits that are expressed only when two copies of the gene are present in an individual's genotype.

3 tall : 1 dwarf

allosomes