If any of the traits that Mendel worked with had been due to linked genes, his dihybrid crosses would have

A. produced more offspring.
B. produced less offspring.
C. exhibited a typical phenotypic ratio of 9:3:3:1.
D. produced sterile offspring.
E. had different results.


E. had different results.

Biology & Microbiology

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Which statement regarding porphyrin synthesis pathways is CORRECT?

A. The succinyl-CoA/glycine porphyrin pathway is used by all bacteria, photosynthetic eukaryotes, and archaea. B. The porphyrin biosynthetic pathways are unified at the step of 5-aminolevulinic acid. C. The glutamate porphyrin pathway is used by all non-photosynthetic eukaryotes and alpha-proteobacteria. D. There is very little conservation of porphyrin synthesis pathways between eukaryotes, bacteria, and archaea.

Biology & Microbiology

A(n) ________ mycelium is a branching network of fibers on and/or beneath the surface of the agar growth medium.

Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology

What type of inheritance fits the data in this pedigree?


A) sex-linked dominant
B) autosomal recessive
C) autosomal dominant

Biology & Microbiology

In humans, freckles are dominant to no freckles, and unattached earlobes are dominant to attached earlobes. Two individuals who both have freckles and unattached earlobes have a child with no freckles and attached earlobes. What are the genotypes of the

parents? (F = freckles; E = unattached earlobes) A) FFEE x FFEe B) ffee x ffee C) FFEE x ffee D) Ffee x FFEE E) FfEe x FfEe

Biology & Microbiology