In genetics, map units express the distance between:a
chromosomes during metaphase.
b. two loci on a chromosome.
c. alleles.
d. polar bodies.
e. homologous chromosomes.
b
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What is the significance of the production of above-ground coralloid roots by cycads that have underground stems?
A. The roots grow in waterlogged soil and they need to protrude into the air in order to respire. B. The branching of coralloid roots provides greater surface area for absorption of water. C. It keeps roots above the ground where they cannot be attacked by parasitic nematodes. D. The roots have mutualistic photosynthetic cyanobacteria that fix nitrogen for the cycad and the cyanobacteria can only survive if they are above ground where they are exposed to light. E. The soil in which cycads live has a low pH that would kill the roots if they were completely below ground.
The form of RNA that carries the code from DNA to
the site of protein assembly is called a. messenger RNA. b. nuclear RNA. c. ribosomal RNA. d. transfer RNA. e. structural RNA.
The cerebrum is more developed in monkeys, apes, and humans compared to other primates
____________________ Indicate whether the statement is true or false.
Provide at least two types of evidence that support the hypothesis of endosymbiosis. What will be an ideal response?