Cells with two of each kind of chromosome are
described by the term
a. polyploid.
b. diploid.
c. triploid.
d. haploid.
e. tetraploid
B
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The karyotype of a young patient shows two Barr bodies per cell. What condition might this child have?
A. Turner syndrome B. Triple X syndrome C. Down syndrome D. Klinefelter syndrome E. This child is a normal female.
A point mutation results in the incorporation of a new amino acid in a protein. Which structure(s) would most likely result?
A) an incomplete protein that still functions normally B) an altered protein, which could result in a genetic disease C) two proteins produced instead of one D) a protein with no change in function
Phil is conducting a seed germination experiment. He places three groups of lettuce seeds in a 34º Celsius incubator with adequate moisture. One set of seeds is placed in a dark area with no light source. A second set is placed under artificial light, and third set of seeds is placed in direct sunlight. This experiment is intended to test Phil's hypothesis that light is necessary for lettuce seed germination.Based on the experimental design, which variable was the dependent variable?
A. germination rate B. type of light C. seeds in the dark D. moisture E. temperature
Two species of lizard live on the same tree and consume the same sorts of food. Regardless, neither species is in direct competition with the other. The key to this scenario is that one of the species is nocturnal; the other is diurnal. What is this called?
a. parasitism b. symbiosis c. resource partitioning d. herbivory