Which can result in Down syndrome? (Select all that apply.)
A) nondisjunction resulting in an extra chromosome 21
B) a reciprocal translocation between acrocentric chromosomes 14 and 21
C) deletions of a segment of chromosome 21
D) having the triploid number of chromosomes
A) nondisjunction resulting in an extra chromosome 21
B) a reciprocal translocation between acrocentric chromosomes 14 and 21
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Birds in which the lower bill protrudes much farther than the upper bill are
a. jaegers. b. skimmers. c. puffins. d. penguins. e. herons.
The pituitary gland is regulated most directly by the
a. pineal gland. b. hypothalamus. c. pancreas. d. adrenal gland. e. thyroid gland.
The drier the air outside a leaf, the faster is water lost from the leaf through the stomata
Indicate whether the statement is true or false
Which of the following are the final by-products of glucose oxidation during aerobic cell respiration?
ATP only heat only carbon dioxide and water only both ATP and heat only ATP, heat, carbon dioxide, and water