Which interval would likely show the higher ratio of double to single chiasmata?
The Q gene locus is 10 map units from the R gene locus which is 40 map units from the S gene locus:
Q——10 m.u.——R——40 m.u.——S
A) Q-R
B) R-S
C) The ratios would be the same in the two intervals.
D) Two chiasmata never occur in the same interval.
B) R-S
You might also like to view...
In a eukaryotic cell, a gene that is initially transcribed is 1500 nucleotides in length. The mature mRNA for the product is 1200 nucleotides in length. What is the most probable reason for the discrepancy?
A) a mutation that results in a shorter product B) removal of introns C) removal of exons D) mRNA breakage E) both choices A and D
When the placenta is delivered, what event allows secretion of prolactin and milk production?
A. a surge of adrenaline and endorphins B. sudden drop in progesterone and estradiol C. gradual drop in oxytocin D. sudden rise in FSH and LH
The four nitrogen bases that are found in the different nucleotides of DNA are
A. uracil, cytosine, guanine, and thymine. B. uracil, adenine, cytosine, and guanine. C. adenine, thymine, cytosine, and guanine. D. None of the answer choices is correct. E. adenine, thymine, cytosine, and uracil.
Almost all cases of cystic fibrosis, a(n) ____ genetic disorder, are the result of mating between two unaffected parents
a. mitochondrial b. autosomal dominant c. autosomal recessive d. X-linked dominant e. X-linked recessive