non- is an error in cell in which members of a pair of , or sister chromatids, fail to

When two or more clearly different phenotypes exist in the same population/species it is called

The change in the of an in a p due to sampling is called genetic

tetraploid refers to with of

triploid refers to with of each

refers to cells with more than two copies of each

The type of selection where one of the two extremes of a trait is selected for/favoured = selection

When individuals leave a population it is called

speciation is the process through which new species evolve from a single ancestral species while living in different geographic regions

refers to cells with two or more complete sets of chromosomes derived from different species

refers to cells with two or more complete sets of chromosomes derived from the same species

is the evolution of an ancestral (single) species into several lineages, each with their own unique adaptations

A fossil is or of past

A species from which a number of new species are descended is called an

the degree of variation of life forms within an ecosystem or the entire planet is

refers to the number of in a cell

are features of the which a species, such as food or shelter

species only found in a narrowly defined region, such as an island country are called

The direct and indirect methods used to determine the order of past events or age of fossil evidence are called methods

A is a special type of where the two ends of the cline meet forming a ring. Neighbouring populations can interbreed but no interbreeding occurs anymore between individuals where the ring connects.

The definition of a species is a of that and and

Acclimatisation is a , reversible of an organism to a in its environment

Simple short repeating sequences of up to about 6 DNA base pairs are called