Babies were accidentally switched at the hospital! Mr. and Mrs. Fire both have type O blood. Which of the following four babies of the same age is most likely the Fire child?
A) baby with type A
B) baby with type B
C) baby with type AB
D) baby with type O
D
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Dense, regular tissues that connect bone to bone are called
a. muscles. b. cartilage. c. ligaments. d. tendons. e. organelles.
Studies on aneuploidies of the sex chromosomes reveal that
A. the X chromosome is not necessary for survival. B. the Y chromosome is not necessary for survival. C. two copies of the X chromosome are necessary for survival. D. two copies of the Y chromosome are fatal. E. none of these is true.
Fire in the taiga
A) damages trees, resulting in excessively slow recovery due to low temperatures. B) alters nutrient cycling, making nutrients unavailable for trees. C) occurs often, resulting in decreased competition of vegetation adapted to repeated burning. D) results in systems dominated by grassland species.
Heritable units of information about traits are called __________.
Fill in the blank(s) with the appropriate word(s).