BACTERIA

A member of a large group of unicellular microorganisms that have cell walls but lack organelles and an organized nucleus, including some that can cause disease

there is a small amount of bacteria growing on this old cheese

COMPLETE DOMINANCE

A kind of dominance wherein the dominant allele completely masks the effect of the recessive allele in heterozygous condition

 Brown eyes is an example of complete dominance

VESTIGIAL ORGAN

body structures considered to have been better developed and functional in the past but to have now lost most or all of their function and some or most of their structure

the male nipple is an example of a vestigial organ

BUFFER

A solution that resists changes in pH when acid or alkali is added to it; typically involve a weak acid or alkali together with one of its salts

 Blood is an example of a buffer (it is hard to see, but it's there)

TRAIT

A genetically determined characteristic

 I (right) inherited the curly hair from my mother (left)

ADHESION

When particles of different substances stick together

The water vapor particles are sticking to the mirror

COHESION

When particles of the same substance stick together

the particles of the putty are sticking together