A chromosome map of species that shows the position of its known genes or markers relative to each other, rather than as specific physical points on each chromosome is called a linkage map. It is different from a gene map.
Basically, the word fossil is derived from the Latin word “Fossilis” which means ‘dug-up’. Form many years any curious and intriguing object that was dug out of the ground was considered to be fossils.
A population of plants that differ consistently from the typical form of the species, occurring naturally in a geographical area is called plant variety
The swim bladder is also known as the air bladder or gas bladder is an internal organ that is gas-filled that provides the ability to control buoyancy in much bony fish.
Populations are groups of individuals of the same species that occupy a given area at the same time. Each population has unique attributes.
The changes in species over time are called evolution. Charles Darwin defines organic evolution as “descent with modification”.
The theory of natural selection is very important in modern biology. Some phenotypes are more successful and leave more offspring than the other phenotypes. This is what we called natural selection.
The physiological effect of an allele over its partner allele located on the same gene locus is called Dominance. These relationships between alleles refer to how the alleles for a single locus interact to produce a phenotype.
Plant breeding is the purposeful technique of using plant species in order to produce genotypes and phenotypes of desired characters and traits for specific purposes.
Integument also called skin, is the outer covering of the body. Integument consists of epidermis and dermis. These are closely related but differ greatly in their origin and nature.