In a commensalistic relationship between two species, only one species benefits without significantly affecting the other
Indicate whether the statement is true or false
TRUE
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The distinctive feature of chloroplasts is that they contain a green pigment called:
A. Gram stain. B. chlorophyll. C. hemoglobin. D. chromatin. E. keratin.
A lichen is sometimes a symbiotic association between a proteobacterium and a fungus
Indicate whether the statement is true or false.
The purpose of the synaptonemal complex is to
a. hold the homologous chromosomes tightly together. b. support homologous chromosomes as they undergo recombination. c. prevent chromosome fragments from floating free in the cytosol after DNA breakage for recombination. d. ensure that the process of crossing over is random. e. hold the homologous chromosomes tightly together, support homologous chromosomes as they undergo recombination, and prevent chromosome fragments from floating free in the cytosol after DNA breakage for recombination.
Glyptodonts are fossil forms that resemble
a. ostriches. b. armadillos. c. kangaroos. d. turtles. e. sloths.