Examine Figure 44.1 in your text. According to this phylogeny, bilaterians (animals with bilateral symmetry) are most closely related to:
A. cnidarians.
B. sponges.
C. the group containing sponges and
cnidarians.
D. the group containing choanoflagellates,
sponges, and cnidarians.
E. None of the answer options are correct.
A
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During the menstrual cycle, _____ peaks first, _____ peak next, and finally _____ surges
A) estradiol; luteinizing hormone (LH) and progesterone; follicle-stimulating hormone (FSH) B) progesterone; luteinizing hormone (LH) and follicle-stimulating hormone (FSH); estradiol C) estradiol; luteinizing hormone (LH) and follicle-stimulating hormone (FSH); progesterone D) estradiol; luteinizing hormone (LH) and follicle-stimulating hormone (FSH); testosterone E) testosterone; estradiol and follicle-stimulating hormone (FSH); progesterone
Mendel demonstrated which of the following about inherited traits? Check all that apply.
_____ traits can be hidden in some generations, but subsequently reappear unchanged in future generations. _____ traits segregate among the offspring of a cross. _____ certain traits are more likely to appear than their alternatives. _____ some traits show blending inheritance. _____ parents that both have the same trait can have offspring with an alternative trait.
The lymphatic organ that protects us from pathogens in our blood is the _____.
What will be an ideal response?
Yolk sacs are found only in animals with shelled eggs
Indicate whether the statement is true or false