There are communities in Spain and also Pennsylvania where polydactyly is a common trait. why does this tend to be passed on from generation to generation?

What tool did Rosalind franklin use to determine the structure of DNA?

How do the resurection of fern, crysts of brine shrimps and tardigrade survive with no water?

A description of natural events that has been proven to be true time after time, without exception. This describes A) data. B) a theory. C) a conclusion. D) a law.

What type of molecules is used to store and release energy like a battery?

In the territorial behavior of the stickleback fish, the red belly of one male that elicits attack from another male is functioning as

Only homologous characters are useful in constructing phylogenetic trees. True or False

Evidence suggests that the earliest stone tools of early Homo were important for: a. protection from other hominid species b. the systematic hunting and killing of large animals (such as dinosaurs) c.

A stuffed toy with a mass of 0.900 kilograms sits on the edge of a bed at a height of 0.830 meters. If the toy falls off the bed, what will its mechanical energy be at a height of 0.500 meters? (Ignore frictional effects.) A) 0.0 J B) 3.6 J C) 7.

Which of the following is true? A. Some substances must be dissolved in water before they can be used. B. Water is more important to some organisms. C. All organisms obtain water through food. D. Plant cells are unaffected when water is scarce.

These bio-molecules serve many functions throughout the body including signaling molecules, receiving signals, transporting other molecules or ions across the cell membrane, catalyzing reactions, regulating gene expression, and defending the body