A consistent estimator is an estimator whose:
A. realized value gets close to the population parameter as sample size grows.
B. standard errors are small.
C. efficiency is achieved in small samples.
D. expected value is an unbiased estimate of the true population parameter.
Answer: A
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Which of the following is NOT a step to calculate a coefficient of inbreeding?
A. Determine the mutation rate B. Determine the total number of common ancestors. C. Determine the shortest inbreeding path between the individual and the common ancestor. D. Calculate the inbreeding path for each common ancestor. E. Place values in the inbreeding coefficient formula.
Heterospory refers to having ____
a. both male and female gametes b. two types of spores in two different types of sporangia c. both male and female parts on the same plant d. separate male and female plants e. both sporophyte and gametophyte generations
Living members of the lineage ____ are jawless vertebrates called hagfishes. They have only a cranium and a notochord for their axial skeleton, with no signs of vertebrae.
a. Petromyzontoidea b. Placodermi c. Cephalochordata d. Urochordata e. Myxinoidea
Which vitamin is especially important in preventing neural tube defects in the embryo?
a. folate b. niacin c. vitamin C d. vitamin D e. vitamin E