The nucleus in a body cell of a fly contains 12 chromosomes. How many chromosomes are there in the nucleus of a sperm from this fly?
a) 3 b) 6 c) 12 d) 24

Which of the following is not a defining characteristic of plants?

The fish shown above is a tarpon. it is a fast-swimming and powerful open-water fish. its closest relatives, oddly, are burrow-dwelling conger eels that stay on the bottom. both eels and tarpon developed from snake-like larvae that float in the plankton during the first stages of life. once they mature, tarpon and eels are not found near one another in the ocean. the tarpon and the eel illustrate all of the following except

Which are characteristics of flukes? check all that apply. a they are free living. b they are a type of flatworm. c they reproduce sexually. d they have eyespots. e they are segmented.