Linked genes are
a. genes whose effects combine to affect a single characteristic.
b. different alleles of the same gene.
c. genes that affect two different traits and that lead to a 9:3:3:1 phenotype ratio in a dihybrid
cross.
d. genes that do not sort independently due to their being physically near each other on the
same chromosome.
e. genes on two different chromosomes
D
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The equation, 6CO2 + 6H2O ?C6H12O6 + 6O2, describes which of the following processes?
A. photosynthesis B. Calvin cycle C. light reaction D. nitrogen fixation E. aerobic respiration
Which factor is responsible for many emerging pathogens in humans?
A) expanded host or tissue range of the pathogen B) longer life spans resulting in a larger elderly population C) increased use of antibiotics in the past half-century D) improved sanitation and hygiene practices E) availability of vaccines
In step 7 of the citric acid cycle, fumarase catalyzes the addition of a water molecule to a carbon–carbon double bond (see Panel 13¬–2). Can this be considered an oxidation reaction? Explain your answer
What will be an ideal response?
The basal lamina:
A. is a specialized extracellular matrix found beneath epithelial tissues. B. surrounds endothelial cells found in blood vessels. C. is a collagen-rich extracellular matrix D. links to epithelial cells through hemidesmosomes, which attach to intermediate filaments. E. All of these choices are correct.