In this diagram of the life cycle of a moss, which structure, A, B, C, or D, is the spore-producing sporangium?
1.A
2.B
3.C
4.D
1
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We have a family of genes that code for different forms of myosin. How different do you think these gene sequences are from each other?
A. completely different, no identical base sequences B. completely the same, identical base sequence C. some differences in sequence, some similarities
A gene that is found in less that 1% of a given population is called monomorphic
Indicate whether the statement is true or false
An echinoderm characteristic is the exoskeleton,
____________________ Indicate whether the statement is true or false.
The notion that organisms that are more distantly related should have time to accumulate more biochemical differences than those more closely related can best be illustrated using
A. radioactive isotope dating. B. a molecular clock. C. gel electrophoresis. D. a geologic time scale.