In peas, Mendel found that tall plants and yellow peas are dominant. The phenotype for a pea plant
with the genotype TTyy would be:
a. heterozygous.
b. Ty.
c. short with yellow peas.
d. tall with green peas.
e. tall with yellow peas
D
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In humans, if non-disjunction led to an individual with a genotype of XO, that person would
A. be female because each cell lacks a Y chromosome. B. be male because each cell has only one X chromosome. C. display both male and female characteristics. D. not survive.
Plaque is _____ caused by _____
a. an infectious disease; bacterial biofilms b. a non-infectious disease; inflammation of the gums c. an infectious disease; non-pathogenic bacteria d. a non-infectious disease; E. coli e. an infectious disease; E. coli
Which of the following happens during a fight or flight response?
a) The parasympathetic dominates b) Blood flow to heart enhanced by beta-1 receptors on blood vessels to heart binding epi c) Heart function increased by beta-2 receptors in heart binding epi d) Both a and c occur e) None of the above occur
What is the most direct and likely cause of coral bleaching?
A. Ocean acidification B. Warming temperatures kill the coral polyps. C. Warming temperatures kill the dinoflagellate population. D. Pollution of coastal waters E. Destructive fishing practices