What is a blastocyst ? a . cluster of cells surrounding a developing egg in the uterus. b. membrane that surrounds and protects a growing embryo in the uterus. c. growth that can form in the wall of the fallopian tubes d. hollow ball of cells formed after a fertilized cell undergoes cell division . i think it’s d or a ? ?

In german cockroaches, curved wing (cv) is recessive to normal wing (cv+). bill, who is raising cockroaches in his dorm room, finds that the frequency of the gene for curved wings in his cockroach population is 0.6. in his friend joe’s apartment, the frequency of the gene for curved wings is 0.2. one day joe visits bill in his dorm room, and several cockroaches jump out of joe’s hair and join the population in bill’s room. bill estimates that, now, 10% of the cockroaches in his dorm room are individual roaches that jumped out of joe’s hair. what is the new frequency of curved wings among cockroaches in bill’s room? 0.69 0.4 0.5 0.31 0.20

This comparative chart is an example of one that might be used by scientists and law enforcement personnel for identification purposes. the chart represents a technological advance called

As scientist had investigated evolution from a variety fields they have found