A type of white blood cell that destroys foreign invaders by surrounding them and then swallowing them is a

Ernst Haeckel (1834-1919), a German biologist and naturalist, disagreed with von Baer and further expanded on the Meckel-Serres law with his biogenetic law. What does the biogenic law claim?

Why must DNA replicate

If an animal has both male and female reproductive organs, it is called? The choices are A. Duosexual B. a hermaphrodite C. A dueterstome D. Bisexual

Miss Smith has blood type a father has blood type a and her mother has blood type B Mr. Smith has blood type AB what is the probability that they will have a child with blood type AB

Which characteristics describe the troposphere? Check all that apply. is the innermost later, contains the ozone layer, has the highest air pressure, spans 12-50 km above Earth, is a good place for planes to fly

Imprinting and specific bird songs are examples of what kind of behavior

A measurement that determines how often the allele (gene variant) expression of a particular gene arises in a population and is an indication of genetic diversity within a species population;

Where in the brain are structures with endocrine function located

What would happen to a grape placed in a bowl with highly concentrated sugar water

A guest drinking a glass of champagne may have a higher BAC than a similar guest drinking a glass of red wine because