An organism that contains two of the same alleles for a trait is said to be for that trait.
a. homozygous
b. dominant
c. recessive
dheterozygous

An organism that contains two of the same alleles for a trait is said to be    A. Homozygous for that trait.

homozygous - two of the same alleles
heterozygous - two different alleles

Hope this helps! :)

A homozygous
In order to remember this i do:
In .homozygous 
there is 3 o which is the same
In heterozygous
there is 2 e and 2 o which is different
Hope it helps

Resistance than a bicycle? i'm not entirely sure