To clone an animal by embryo splitting, ____
a. there must be two host animals and two fertilized eggs
b. a fertilized egg is collected from a donor mother and implanted into a host animal
c. an egg is fertilized by in vivo fertilization and remains in the host animal to mature
d. an embryo must be in a blastocyst stage in the host animals while the splitting takes place
e. an unfertilized egg is collected from a donor mother and then fertilized in a dish by in vitro fertilization
e
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The inability of organisms to evolve anything that could be an advantage reflects _____
A) the limits of historical constraints B) the inability to compromise C) the consequences of random mutations D) the consequences of inbreeding
The stage of meiosis that makes descendant cells haploid is _____
a. prophase I b. prophase II c. anaphase I d. anaphase II e. metaphase I
It is submerged only at the highest tide of the lunar
cycle. a. upper littoral b. midlittoral c. lower littoral d. intertidal e. neritic
The pylorus is located at the exit of the:a
stomach. b. esophagus. c. jejunum. d. duodenum. e. rectum.