Choose the observations supporting the hypothesis that the initiation of eye development in animals occurred only once.
_____ In some organisms, Pax6-related genes are associated with development of the forehead.
_____ A large number of different organisms use Pax6-related genes in eye development.
_____ The DNA sequence of Pax6-related genes in animals is uniformly similar.
_____ The common ancestor of animals had a complex eye.
_____ In some organisms, Pax6-related genes are associated with development of the forehead.
__X__ A large number of different organisms use Pax6-related genes in eye development.
__X__ The DNA sequence of Pax6-related genes in animals is uniformly similar.
_____ The common ancestor of animals had a complex eye.
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The source of variation among microorganisms that were once identical is
A. antibiotic resistance. B. virulence factors. C. sigma factors. D. mutation.
The species that have had proportionally the most time to diverge are:
A. R and D B. F and Z C. A and Z D. F and R E. F Clarify Question 1. What is the key concept addressed by the question? 2. What type of thinking is required? 3. What key words does the question contain and what do they mean? Gather Content 1. What do you know about relatedness based on a phylogenetic tree?How does it relate to the question? Consider Possibilities 1. What other information is related to the question? Which information is most useful? Which lines connecting two species are the longest? Choose Answer 1. Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer? Reflect on Process 1. Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
Cancer can be considered an inherited disease if ____________________
a. at least one mutation is inherited b. a family member has some type of cancer c. all members of the family share the same gene d. a person inherits a tumor suppressor gene from one of his parents
If a couple is planning on having three children, what is the probability that only one will be male?
a. 0 b. 1/4 c. 3/8 d. 1/2 e. 3/4