Mendel used the ______ to determine whether an individual with the dominant phenotype was homozygous or heterozygous for that trait.
A. backcross
B. testcross
C. dihybrid cross
D. F2 generation
E. double cross
B. testcross
Biology & Microbiology
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Which of the following is considered to be a plant behavior?
A. response to sunlight B. response to plant hormones C. response to touch D. response to gravity E. all of the choices
Biology & Microbiology
The ____ prevents important substances in the xylem form leaking into the root cortex
a. primary xylem b. root hairs c. endodermis d. tonoplasts e. pericycle
Biology & Microbiology
What is the difference between a strict anaerobe and a facultative anaerobe?
What will be an ideal response?
Biology & Microbiology
Which statement is true of all genetically engineered organisms?
A.) They have altered genomes B.) They are implanted with the Bt gene C.) They age more quickly than normal D.) They contain bacterial genes
Biology & Microbiology