The mating of totally unrelated homozygous strains of corn produced a new strain of corn that was very different from
both parental strains in many characteristics. Provide some explanations for this phenomenon. What will be an ideal response?
Concepts to Consider: The offspring strain of corn will be heterozygous for many of its
traits. As such, the observed differences may be due to incomplete dominance, codominance,
multiple alleles, epistatis, or polygenic inheritance.
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Insertion of two bases into the coding region of a gene just after the start codon of a gene will result in
a ____ mutation.
a. missense b. chromosomal c. frameshift d. silent e. nonsense
There is significantly more genetic variation between human populations than within them. Indicate whether the statement is true or false
Metamorphosis is
A. the developmental changing of a scale to a feather. B. changing of one body form to another within a species, such as the change from an aquatic tadpole to a terrestrial frog. C. an intermediate condition, such as length of legs in mice between longer legs of some mice and shorter legs in others, a condition caused by Hox genes. D. the evolutionary transition from fishes to amphibians.
`Please select all of the statements which are TRUE regarding isolated colonies.
> The colony results from a single cell or a cluster of cells multiplying into a visible mass > The cells within the colony are all the same species > Isolated colonies form on a solid nutrient media > Isolated colonies form in a liquid nutrient media > Isolated colonies can only be obtained via the streak plate method