How can a human being reproduce a male offspring?

Ture or false evidence for evolution includes millions of fossils

Which worm has eyespots that are used to detect light? a fluke b marine worm c planarian d tapeworm

In a cladogram, what occurs at a node? a derived trait appears. evolution is stopped. an ancestor dies. the cladogram ends. aa as s as ss what are the chances that their offspring will have sickle cell anemia? 0% 25% 50% 100%