If a gene has three alleles in a population, their frequencies must add up to 1.5
Indicate whether the statement is true or false
FALSE
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A(n) ____ inhibitor has a structure that is so similar to the substrate that it can bond to the enzyme just like the substrate.
Fill in the blank(s) with the appropriate word(s).
Why is the symbiotic relationship of truffle mushrooms and tree roots considered to be crucial to the colonization of land?
A) This relationship is found in some of the oldest plant fossils. B) Truffles have the terrestrial adaptation of seeds. C) Tree roots can be found only in terrestrial environments. D) Truffles provide trees with sugars.
What were the most direct ancestors of modern plants?
a. cyanobacteria b. fungi c. green algae d. sponges
Which type of blood vessels carry oxygenated blood away from the heart?
a. Ventricles b. Arteries c. Pulmonary arteries d. Venules