The drosophila regulatory segment that defines the location of eve stripe 2 contains binding sites for four different transcription regulators: two repressors (giant and krüppel) and two activators (bicoid and hunchback). for eve to be efficiently expressed in stripe 2, both repressors must be absent and both activators present. what would you expect to see in flies that lack the gene that encodes bicoid? (assume that bicoid does not influence the expression of hunchback, giant, or krüppel.)

The images show the wings of a bat and a bee. from this evidence, what can you conclude about the evolutionary relationship between these organisms? a. the wing structures of the bat and the bee are different, indicating they didn’t inherit wings from a common ancestor. b. the wing structures of the bat and the bee are different, indicating they inherited wings from a common ancestor. c. the functions of bat wings and bee wings are the same, indicating they obtained wings from a common ancestor. d. the functions of bat wings and bee wings are different, indicating they didn’t obtain wings from a common ancestor.

There are specialized producers that live in warm water vents deep in the ocean. these producers do not per-form from photosynthesis, but instead perform a similar process with iron and other chemicals. why do you think these producers use this process instead of photosynthesis?

What would most likely happen if a person increased the amount of saturated fat in his or her diet? the person's risk of cardiovascular disease would increase. the person's risk of cardiovascular disease would decrease. the person's bad cholesterol would decrease. the person’s good cholesterol would increase.