Because of his color blindness, he has difficulty distinguishing between red and green.

He treats us as a big friend.

His words had a great influence.

His genotype is very rare.

That decision had a bad effect on our project.

Genetic contamination may have serious impacts on biodiversity in the natural world.

Genetics is a branch of biology that studies the function of genes and the laws of inheritance.

The doctor said his illness is genetic.

He needs special care because of his inherited disease.

His red hair is thought to be an atavism.