Why are most of the colorblind humans males? (use chromosomes to explain)
What will be an ideal response?
Answer: Males have 1 X-chromosome (where the sex-linked traits are). Females have 2 X-chromosomes, which allows the other X to cover the X with the colorblind trait on it. In males, if the colorblind gene is on their only X, they have nothing to cover it with.
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You discover a new plant hormone that stimulates cell division. Which experiment will allow you to determine if it is a cytokinin or gibberellin?
A. Determining where in the plant the hormone is produced will allow you to differentiate. B. Determining where the hormone binds its receptor will allow you to differentiate. C. Determining the role of the hormone in plant tissue culture will allow you to differentiate. D. Nothing will allow you to differentiate, these hormones are indistinguishable.
A(n) ________ is a group of cells of similar type that work together to serve a common function
Fill in the blank(s) with correct word
One of the first set of experiments to refute spontaneous generation was done in 1688 by Francesco Redi. Which of the following statements regarding Francesco Redi's experiments is true?
a. His experiments determined a series of conditions that must be satisfied in determining the causative agent of disease. b. The results of his experiment demonstrated that living organisms are derived from other living organisms. c. His experiments demonstrated that oxygen is essential to all life. d. He determined that material from an infectious agent taken from one person could be used to stimulate immunity in another person.
Which of the following kinds of data could be used to map the relative position of three genes on a chromosome?
A) the frequencies with which the genes exhibit incomplete dominance over each other B) the frequencies of mutations in the genes C) the frequencies with which the genes are inherited from the mother and from the father D) the frequencies with which the corresponding traits occur together in offspring