A male with type O blood marries a woman with type AB blood. Is it possible for them to have a child with type O blood?

These nitrogen bases have 2 rings in their structure and include adenine and guanine:

If you had a genotype of AB what blood type would you have?

During natural selection, the environment selects the “best” genes.

The enzyme responsible for building DNA is:

Mutations may be caused by exposure to:

During DNA replication, each strand serves as a pattern or template:

Suppose a man who is heterozygous for freckles (dominant) and heterozygous for tongue rolling (dominant) is crossed with a woman who is heterozygous for freckles and heterozygous for tongue rolling. What is the probability of them having a child without freckles and without the ability to roll their tongue?

A genotype of PwT would illustrate:

DNA can be obtained from teeth, blood, and even incinerated bone: