Counting the total number of individuals within a square or rectangle of known area, referred to as a(n) ________, is a sampling method that is commonly used to study plants or other sessile animals
Fill in the blank(s) with correct word
quadrat
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What explains why even close relatives have a varied mix of genetic traits?
a. heterozygous b. allele variation c. co-dominance d. independent assortment e. continuous variation
The four defining characteristics of chordates are
A. pharyngeal pouches, a dorsal nerve cord, a notochord, and a postanal tail. B. bilateral symmetry, segmentation, a well-developed coelom, and limbs. C. a dorsal hollow nerve cord, a notochord, bilateral symmetry, and mammary glands. D. a well-developed coelom, pharyngeal pouches, a notochord, and jaws. E. segmentation, a dorsal hollow nerve cord, pharyngeal pouches, and an amniotic egg.
Which of the following is a correct useage of binomial nomenclature?
A. Homo Sapiens B. homo sapiens C. Homo sapiens D. Homo Sapiens
Suppose you are estimating the following model: Yi = ?0 + ?1Xi + Ui. You believe the variance of the unobserved factors (U) varies with X. If this is true, what is the consequence?
A. Your estimate for ?0 will be biased. B. Your estimate for ?1 will be biased. C. Your estimate for ?1 and ?0 will be biased. D. None of the answers is correct.