Homo ergaster D) Lucy
What will be an ideal response?
Answer: B
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In combination, the products of gap genes, pair-rule genes, and segmentation polarity genes _____
A) trigger the reorganization of the larval body into an adult body B) define the segmented body plan of the embryo C) set up the back-to-belly axis of the larval body D) direct cell movements during differentiation
The increased mortality of coniferous trees in the Pacific Northwest between 1955 and 2007 is an example of a
reaction to ____.
a. density-independent factors b. density-dependent factors c. predation d. crowding e. population growth
A membrane is more “fluid” than solid because
a. phospholipid tails prevent close packing. b. proteins can shift positions. c. water is the main component. d. phospholipid tails prevent close packing, and proteins can shift positions. e. phospholipid tails prevent close packing, proteins can shift positions, and water is the main component.
Sitting at the top of a slide, a child has ________ energy; sliding down, she is using ________ energy
Fill in the blank(s) with correct word