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

He treats us as a big friend.

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.

His words had a great influence.

His red hair is thought to be an atavism.

He needs special care because of his inherited disease.

The doctor said his illness is genetic.

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