A testcross is designed to identify the ________ trait.
Fill in the blank(s) with the appropriate word(s).
Ans: dominant
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The unique antigenic determinants of the 90 serotypes of Streptococcus pneumoniae are found
A) on the cell-surface M proteins. B) on the capsular polysaccharides. C) in the bacterial cell wall. D) in the inclusions in the periplasmic space.
Which of the following bacteria is not closely related to the others?
A. Salmonella enterica subsp. enterica B. Salmonella enterica subsp. indica C. Salmonella bongori D. Salmonella enterica subsp. arizonae
Which iodine containing hormones are produced by the thyroid gland?
How is natural selection related to sexual reproduction as opposed to asexual reproduction?
A) Sexual reproduction results in many new gene combinations, some of which will lead to differential reproduction. B) Sexual reproduction results in the greatest number of new mutations. C) Sexual reproduction allows the greatest number of offspring to be produced. D) Sexual reproduction utilizes far less energy than asexual reproduction.