Skin color comes from the pigment
a. melatonin.
b. melanin.
c. anthocyanin.
d. giberellin.
e. fucoxanthin.
B
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Of the following cell types, the greatest concentration of high-density lipoprotein (HDLs) would be associated with ________ cells.
A) skin B) muscle C) connective tissue D) blood E) liver
Through _____ , a body part of an ancestor is modified differently in different lines of descent
a. morphological divergence b. adaptive divergence c. morphological convergence d. homologous evolution e. natural selection
A chromosome contains the following gene order: A B C D • E F G H Which of the following rearrangements represents a pericentric inversion?
A) A B C • D E F G H B) A F G H • B C D E C) A C B D • E F G H D) A F D E • C B G H E) A B C D • H G F E
Which group of organisms display radial cleavage during development?
a. annelids b. mollusks c. cnidarians d. arthropods e. echinoderms