T cell receptors on a particular T cell can recognize more than two antigens
Indicate whether the statement is true or false.
Answer: FALSE
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Which of the following statements about complex multicellular organisms is false?
A. Complex multicellular organisms and simpler multicellular organisms perform a similar range of ecological functions. B. Regulatory genes guide the development of complex multicellular organisms. C. Large differences in the body forms of complex organisms result from different patterns of gene expression. D. When compared to their simpler phylogenetic relatives, complex multicellular organisms show greater species diversity. E. None of these statements about complex multicellular organisms are false.
What structures of the male and female reproductive systems do not share a common embryonic origin?
A. labia majora and scrotum B. labia minora and urethra C. clitoris and penis D. cervix and ejaculatory duct E. All of these pairs share a common embryonic origin.
Early on, researchers suspected that Dolly was
physically older than her chronological age because of the results from a study of her a. telomeres. b. blood. c. egg cells. d. brain tissue. e. teeth.
How do daughter cells compare to parent cells at the end of mitosis and cytokinesis?
A) They have half the number of chromosomes B) They have exact copies of the same chromosomes C) They have double the number of chromosomes