The results of a testcross reveal that all offspring resemble the parent being tested. That parent
necessarily is
a. heterozygous.
b. polygenic.
c. homozygous.
d. recessive.
e. pleiotropic.
C
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What is an example of a virulence factor that is related to immune system evasion?
A) LPS in Gram-negative cell wall B) flagella C) capsule D) fimbriae E) iron-binding protein
Unlike virtually all other eukaryotes, diplomonads lack mitochondria. Why aren't these organisms considered to represent a state most like the common ancestor to all other eukaryotes?
A. They have nonfunctional mitochondrial remnants. B. They are phototrophic. C. They do not use ATP to power their cells. D. They have endosymbiotic relationships with other bacteria.
A group of scientists are attempting to remove a gene from bacterial cells that confers resistance to the common antibiotic, penicillin. Which tool would be the most precise and efficient for this task?
a. using CRISPR to find and cut a specific sequence of bacterial DNA b. using PCR to amplify bacterial DNA c. using restriction enzymes to chop bacterial DNA into small pieces d. creating a gene library from bacterial DNA e. cloning bacterial DNA
Neuroendocrine cells can be found in the ________
Fill in the blank(s) with correct word