A scientist could test how the traits of desert plants are adaptive by ____
a. transplanting individuals that have the trait into moister habitats
b. selectively breeding individuals displaying that trait
c. conducting straightforward experiments in the desert habitat
d. crossing individuals in the desert with individuals in moister habitats
e. comparing them to traits in related species from moister habitats
ANSWER: e
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Indicate whether the statement is true or false.
The mitochondria present in the sperm provide
a. energy for the movement of the flagellum. b. energy for the acrosome to penetrate the egg. c. energy for the maturation of the sperm. d. nutrients for the sperm. e. nutrients for the developing embryo.
A result that is very unlikely to have occurred by chance alone is said to be ________ .
a. free from bias b. scientifically accurate c. scientifically novel d. free from sampling error e. statistically significant
What are induced pluripotent stem cells?
A. inner mass cells that have been removed without killing the embryo B. adult stem cells that have been made in the laboratory C. adult stem cells that are reprogrammed to become embryonic stem cells to produce new embryos D. totipotent stems cells from a zygote that have been induced to become pluripotent