Fossil evidence shows that giraffes living 1000 years ago had much shorter necks than the giraffes
seen today. Which of the following statements best explains this observation?
a. The two groups of giraffes are not related.
b. The two groups of giraffes arose as a result of convergent evolution.
c. The giraffes acquired longer necks through the continuing process of natural selection.
d. The difference in neck length supports Lamarck's hypothesis.
e. The difference in neck length is evidence for homoplastic inheritance
C
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Which of the following terms refers to the male reproductive cell at the earliest stage of spermatogenesis?
A. Spermatozoan B. Spermatid C. Spermatogonium D. Spermatocyte
DNA sequences in many human genes are very similar to the sequences of corresponding genes in chimpanzees. The most likely explanation for this result is that
A. convergent evolution led to the DNA similarities. B. humans evolved from chimpanzees. C. humans and chimpanzees share a relatively recent common ancestor D. humans and chimpanzees are not closely related. E. chimpanzees evolved from humans.
In the creation of a DNA profile, _____ are typically used
a. minisatellites b. short tandem repeats c. introns d. exons e. plasmids
Briefly describe what is meant by the term autoradiography and identify a classic experiment that used autoradiography to determine the replicative nature of DNA in eukaryotes
What will be an ideal response?