In a mapping cross, you determine that the recombination frequency between:
loci Q and P is 12%
loci Q and L is 15%.
If locus Q is in between loci P and L, then the recombination frequency between P and L should be approximately:
A. 3%
B. 27%
C. 50%
D. 75%
B
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Ribosomes are made up of:
A. only RNA molecules. B. only DNA molecules. C. DNA and RNA. D. protein and RNA. E. only protein molecules.
True or False: Microorganisms dominated Earth's ecosystems for most of the planet's history
A. true B. false
Approximately 3.5 million years ago the Isthmus of Panama formed. This new landmass severed the connection between the Pacific Ocean and the Caribbean Sea. An ancestral fish population (porkfish) was split in two by this event; the two populations no longer interbreed and are two distinct species. This type of speciation is called
A. allopatric speciation. B. parapatric speciation. C. hybridization. D. sympatric speciation. E. sexual selection due to ecological variation.
Which feature would be the least useful in determining if a protist were a close relative of plants?
A. Capacity for photosynthesis B. Plasmodesmata between cells C. Cellulose cell walls D. Enzymes for ATP production