What contains two different alleles for a trait?

Answer 1

Alleles represent a specific gene that represents a trait or something specific. for example let me explain with eye color.

blue eyes are a recessive trait so lets use "b" to represent them

brown eyes are a dominant trait so lets use the capital letter "B"

Now say my mother (and the rest of her family and extended family) has blue eyes and my father (and the rest of his family and extended family) has brown eyes. My eyes would be brown because brown is dominant. we represent this like: Bb.

B and b are two different alleles because one is dom and the other is rec.

same goes for if both my parents had brown eyes: BB

or had blue eyes: bb

BB and bb are the same alleles even though they come from two different people.

Answer 2

Homozygous - this can be homozygous dominant (i.e. BB, HH, TT) or homozygous recessive (bb, hh, tt, etc.).

Answer 3

Heterozygous.

i.e. A = red flower, a = white flower

A plant exhibiting Aa is heterozygous for the red flower gene

Answer 4

A diploid organism.

Answer 5

heterozygous

Answer 6

diploid :)

Answer 7

homozygous