In wetlands, what is the emergent vegetation?
a. freshly germinated shoots from seeds fallen from trees above
b. plants that are rooted in the soil but have stems, leaves, and flowers above the water surface
c. second growth vegetation after a chaotic clearing event such as a fire or volcano
d. vegetation that grows completely underwater
b. plants that are rooted in the soil but have stems, leaves, and flowers above the water surface
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Heterosis is _______
A. the combination of lethal alleles due to inbreeding B. an increased vigor of hybrids resulting from the crossing of inbred strains C. a measurement of the variance due to environmental factors D. the result of homozygosity of multiple, dominant, detrimental alleles.
Why is it unethical to use humans in experimental genetics? Explain your reasoning
What will be an ideal response?
Describe the structure of the placenta. What parts are maternal and what parts are fetal?
What will be an ideal response?
Select the two major portions of the adrenal glands.
a. hemisphere b. cortex c. lobule d. lobe e. medulla