You are a detective on a sexual assault case and are presented with these DNA data. Who would you arrest for the crime?
1.The boyfriend.
2.Suspect 1.
3.Suspect 2.
4.There is still not enough information. I would arrest no one.
2
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The electrons that are passed to NADP+ during the
noncyclic pathway are obtained directly from __________ but ultimately from __________. a. chlorophyll; water b. CO2; chlorophyll c. ATP; O2 d. water; chlorophyll e. NADPH; chlorophyll
Isotopes of an element are different from the most common standard form due to differences in the ____
a. atomic number b. position of the element in the periodic table c. number of neutrons in the nucleus d. number of protons in the nucleus e. size of the electron cloud
The processes of synapsis and the formation of chiasmata
a. involve reciprocal exchange of chromosomal sections. b. involve the recombination of DNA on homologous chromosomes. c. bring about an increase in genetic variation. d. provide evidence that an exchange of genetic material has occurred. e. All of the above
Dr. Foster is studying the effectiveness of a new memory-boosting diet supplement. He posts an ad for subjects at two local colleges. He assigns 55 students from college A to the treatment group (daily doses of the diet supplement) and 60 students from college B (no supplement) to the control group. After 6 months of the study, Dr. Foster gives all of the students in each group a memory test. The treatment group scores an average of 20 points higher than the control group (a significant difference). Based on these findings, Dr. Foster declares that the memory-boosting supplement helps increase a person's memory. What would improve the design of the Dr. Foster's study?
A) Make the number of students in both groups the same. B) Randomly assign students to one of the two conditions (treatment or control). C) Administer the supplement for a longer period of time. D) Give the control group half the daily dosage of the diet supplement that the treatment group receives. E) Deprive the control group of sleep to see if that also affects memory recall.