The cellular basis of muscular dystrophy is that some of a child's muscle cells
A) have combined into a structure that cannot contract.
B) lack DNA.
C) lack a protein that enables them to withstand the force of contraction.
D) have too much of a contractile protein and become weak.
C) lack a protein that enables them to withstand the force of contraction.
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You have spent time working with a population of beetles. Males range in size from 2-6 cm in length. You realize that the females only mate with males that measure less than 3 cm long
If you measured allele frequencies at a single locus that contributes to overall length, would you expect this population to be in H-W equilibrium from one generation to the next? A. yes B. no
Answer the following statements true (T) or false (F)
1. RNA polymerase can bind to the promoter region of the DNA even when the lac repressor is bound to the operator site. 2. Both eukaryotes and prokaryotes require a promoter region for gene transcription. 3. A cis-effect is a form of gene regulation that can occur between two DNA segments that are not physically adjacent. 4. Eukaryotic genes are almost always organized in groups, similar to operons in prokaryotes.
A sticky structure adapted to receive pollen is
a(an)
a. style. b. stigma. c. anther. d. filament. e. corolla.
Why do we expect that postzygotic isolation will evolutionarily precede prezygotic isolation in the speciation process?
What will be an ideal response?