Which of the following statements is true about the phylogenetic tree shown here?
A. The gibbon is more closely related to the rhesus monkey than to the chimpanzee.
B. The galago is more closely related to the green monkey than to the capuchin.
C. The green monkey and rhesus monkey share a common ancestor with the gibbon and chimpanzee.
D. The gibbon does not share a common ancestor with the chimpanzee or human.
E. The green monkey and rhesus monkey share a more recent common ancestor than do the chimpanzee and human.
Ans: C. The green monkey and rhesus monkey share a common ancestor with the gibbon and chimpanzee.
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Indicate whether the statement is true or false.
A wild duck needs a steady supply of energy to be able to fly for hours. Domesticated chickens rarely fly. As a result, you would expect to find in the breast muscles of wild ducks than in domesticated chickens.
A. less cytoplasm B. more Golgi apparatus C. fewer mitochondria D. more mitochondria E. more cytoplasm
What is the name of the main embryonic cell layer from which the nervous system is derived in most metazoans?
a. endoderm b. mesoglea c. mesoderm d. ectoderm
In humans, how does spermatogenesis differ from oogenesis?
a. Spermatogenesis involves meiosis, while oogenesis involves mitosis. b. Spermatogenesis produces fewer numbers of gametes. c. Spermatogenesis begins at birth, while oogenesis begins at puberty. d. Spermatogenesis continues throughout life, while oogenesis ends at menopause.