How many distinct phenotypes exist for a trait controlled by three additive loci?

a. 3
b. 7
c. 8
d. 9
e. 11


Answer: b. 7

Biology & Microbiology

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________ are nonviral genetic elements that have reverse transcriptase activity

Fill in the blank with correct word.

Biology & Microbiology

Mendel’s principle of independent assortment describes the segregation of paired factors during the formation of

gametes. __________________ Indicate whether the statement is true or false.

Biology & Microbiology

What is the primary determinant of virulence in Streptococcus pneumoniae?

A) the presence of a particular Lancefield antigen B) the production of pneumolysin C) the presence of a polysaccharide capsule D) the ability to lyse red blood cells E) strain-specific teichoic acids in its cell wall

Biology & Microbiology

Short tandem repeats on ____ may be used to determine genetic relationships among male relatives and descendants

a. the Y chromosome b. chromosome 3 c. the X chromosome d. chromosome 8 e. chromosome 20

Biology & Microbiology