Class 9 | Heredity and Variation

allosomes

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

Free ear lobe

Watson and Crick

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

White colour of flowers

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

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

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

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

Absence of hair on arms

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

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

rRNA

50% carrier and 50% sufferer

3 tall : 1 dwarf

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.

Haemophilia

Turner syndrome

Yellow colour of seeds

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

telocentric

Leber hereditary optic neuropathy

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

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

50% normal and 50% carrier

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.

Frederick Miescher

Thymine

all carrier