A gene for the MN blood group has codominant alleles M and N. If both children are of blood type M, which of the following is possible?
A) Each parent is either M or MN.
B) Each parent must be type M.
C) Both children are heterozygous for this gene.
D) Neither parent can have the N allele.
A
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Become an increasing problem as habitat size shrinks.
A. hotspot B. habitat loss C. edge effects D. megafaunal extinction E. extinction vortex
The developing embryo in the accompanying figure is representative of development in a(n):
a. bird. b. annelid. c. sea star. d. frog. e. mammal.
Animal bodies are organized along the ________ axes.
A. dorsoventral, cranioposterior, and right-left B. dorsoventral, cranioposterior, and segmented C. apicalventral, anteroposterior, and right-left D. dorsoventral, anteroposterior, and left-right E. dorsoventral, anteroposterior, and segmented
You inoculate a culture into a test tube containing broth and take it out of the incubator the next day. You see the culture is growing at the bottom of the tube. You conclude the culture must be
A. aerobic. B. anaerobic. C. facultative anaerobe. D. microaerophilic. E. aerotolerant.