When a population shows a range of nonincremental differences in some trait, they are showing
a. continuous variation.
b. pleiotropy.
c. linear variation.
d. exponential variation.
e. skewed variation.
A
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Blood agar is both a differential and enriched medium.
Answer the following statement true (T) or false (F)
The substance that typically provides rigidity to fungal cell walls, and is also found in the external skeletons of insects
and other arthropods, is called ____.
a. lignin b. cellulose c. starch d. collagen e. chitin
Which of the following is false about a cell undergoing mitosis with 4 chromosomes?
A. During metaphase there are 4 chromosomes B. During prophase the homologous chromosomes line up and cross-over C. During metaphase there are 4 centromeres D. During anaphase there are 8 DNA molecules
If a pedigree of several generations shows only females affected by a particular trait, it cannot be a(n) ____ trait
a. autosomal recessive
b. autosomal dominant
c. Y-linked
d. X-linked recessive
e. X-linked dominant