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In pea plants, yellow pods are dominant to green pods. If you see green pods then the genotype of that plant must be _____________ for pod color.

In a famous experiment that helped disprove the possibility of spontaneous generation, Francesco Redi hypothesized that, contrary to popular belief, maggots did not appear spontaneously but came from flies. He predicted that if flies were kept away from meat maggots would not appear. To test his hypothesis, Redi placed identical pieces of meat in two identical jars and placed the two jars on the same window sill. He placed a cheesecloth lid on one jar and left the other uncovered for several days. In the experiment the independent variable is:

In many cases we now know where genes are found along a chromosome, and this place is referred to as a ______.

Which eighteenth-century European intellectual undertook to categorize all of life’s diversity?

Co-authored original paper on evolution by natural selection with Darwin, this ‘blue collar’ scientist spent a lot of time in the Amazon Basin collecting specimens for museums.

The concept of defining sexual reproducing species based on reproductive isolation is known as the 

Where the gonads are ______, the gametes are eggs and the sex is ______.  

DNA is packaged with ______ into very thin molecules called chromosomes.

In human females, the vulva is made of three main components: the vaginal opening, ______, and labia majora and minora.

Which of the following pairs of species are thought by biologists to be most closely related to each other?