In a population of dragonflies, wing structure is determined by two loci (A, B) each with two alleles (A, a; B, b). Abnormal wings are produced in aa individuals unless they possess at least one B allele. This is an example of:
What will be an ideal response?
ANS:
epistasis
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Mitochondrial DNA (mtDNA) in humans
A. is always donated to the offspring from both parents. B. can be used to identify related people. C. can be isolated only from intact embryos. D. can be used to establish paternity.
________ arrays are used to assess the diversity of a microbial population.
Fill in the blank(s) with the appropriate word(s).
The percent oxygen saturation of hemoglobin is highest in the:
a. tissues where oxygen concentration is lowest. b. tissues where oxygen concentration highest. c. venules where oxygen concentration lowest. d. pulmonary capillaries where oxygen concentration lowest. e. pulmonary capillaries where oxygen concentration highest.
If a zygote has the genotype XYY, how many total chromosomes were in the sperm before it fused with the egg?
A) 22 B) 20 C) 24 D) 21 E) 23