A monophyletic group is defined by:
a. clades.
b. DNA sequences.
c. shared derived characters.
d. shared ancestral characters.
e. most common recent ancestor.
c
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Which plant cell organelle contains its own DNA and ribosomes?
A) glyoxysome B) vacuole C) mitochondrion D) Golgi apparatus E) peroxisome
Which of the following statements about telomeres is INCORRECT?
A. Telomeres are produced by telomerase. B. Telomeres are found at the ends of DNA. C. Telomeres are short repeat sequences. D. Telomeres would predominate more in cells of older than younger individuals. E. Telomeres are crucial to the viability of a cell that replicates often.
Plants make ____, which are similar to female sex hormones in mammals but have nothing to do with sexual
reproduction in plants. a. estrogens b. phytoestrogens c. auxins d. cytokinins e. gibberellins
Among the following choices, which organism likely has the highest systolic pressure?
A) mouse B) human C) hippopotamus D) giraffe