Sean and Catherine have 4 kids. Each kid has a different blood type. The public immediately assumes that Sean couldn't be the father. is this necessarily true? Use Punnett squares to show your work for if it is possible for them to have these 4 kids.

This is the diveristy of ecosystems natural communites and habits it is the variety of ways that species interact with each other and their environment

What causes temperature extremes in the desert

Select the correct answer. which mutation is harmful to the organism? a. a mutation allowing moths to camouflage better on blackened tree bark b. a mutation making staphylococcus aureus resistant to the antibiotic methicillin c. a mutation inhibiting human immunodeficiency virus from attaching to and entering the cell d. a mutation causing uncontrolled cell division e. a mutation giving plant leaves a bitter taste to discourage herbivores from eating them