If both parents are "carriers" due to the presence of one copy of the cystic fibrosis allele, what are the odds that they would have a normal child?
a. 0
b. 25%
c. 50%
d. 75%
e. 100%
d
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Eight 10-year-olds in the community became sick within a 24-hour period with vomiting and diarrhea. Personnel from the health department interviewed the children and their families, attempting to determine the source of the illness. Which piece of information below is most suggestive of the common source?
A. All eight children attended the same birthday party two days prior to becoming ill. B. Five of the eight children ride the same school bus. C. In two of the eight families, siblings were just beginning to show signs of illness at the time of the interview. D. All eight children go to the same school. E. Six of the eight children are on the same soccer team which practices three times/week.
Two organisms, AABBCCDDEE and aabbccddee, are mated to produce an F1 that is self-fertilized. If the capital letters represent dominant, independently assorting alleles. What proportion of the F2 genotypes will be recessive for all five loci?
A) 1/16 B) 1/1024 C) 1/64 D) 1/256 E) 1/243
The process of photosynthesis, including all of the enzymes and chemical intermediates, is completely
understood.
Indicate whether the statement is true or false.Where is rain more acidic in the United States?
1.East Coast
2.Midwest
3.Pacific northwest
4.West Coast