Homozygous means having identical piars of genes for any given pair of heredity characteristics.
heterozygous means an individual having two different alleles for a specific trait.
It can impact its physical characteristics
I believe the answer is b
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Answer;
-DNA
Explanation;
-DNA stands for deoxyribonucleic acid. It's the genetic code that determines all the characteristics of a living thing.
-It contains the genetic instructions for the development and function of living things. These instructions are needed for an organism to develop, survive and reproduce. To carry out these functions, DNA sequences must be converted into messages that can be used to produce proteins, which are the complex molecules that do most of the activities in our bodies.
I think carbon dioxide then sugars