You have an opportunity in biology lab to observe the prepared, stained karyotypes of a stallion, a mare, and their foal offspring horses. Banding patterns of some of the autosomes from the foal match those of the stallion, while others from the foal match those of the mare. This variability is produced in meiosis due to
A. random alignment of chromosome pairs.
B. semiconservative replication.
C. random fertilization.
D. mutation.
E. nonrandom fertilization.
A. random alignment of chromosome pairs.
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Ringlike patterns on an earthworm and "six-pack abs" in humans are evidence of ____ in an animal's
body plan.
a. cephalization b. segmentation c. radial symmetry d. mesenteries e. cleavage
A salt will dissolve in water to form ____
a. acids b. only hydrogen and oxygen bonds c. ions other than H+ and OHd. bases e. buffers
Which of the following are rod-shaped bacteria?
a. vibrio b. bacilli c. diplococci d. spirochete e. streptococci
A region that has grasses as the dominant vegetation form, widely spaced trees, a short wet season, and a pronounced dry season is a ________
Fill in the blank(s) with correct word