Similar body parts are not always homologous
They may have evolved independently in
separate lineages as adaptations to the same
a. reproductive isolation of these groups.
b. environmental pressures.
c. reduced genetic variability in these groups.
d. identical genes in all three groups.
e. factor as all of these
B
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Future kidney cells and heart cells can differentiate into their respective specialized cell types because
A. they express a different set of genes during development. B. they possess different genes. C. they arise from different embryonic stem cells. D. they express different transcription factors. E. they express different genes and different transcription factors during development.
Summarize the relationships between the following types of organisms with respect to genome size: viruses, bacteria,
archaea, and eukaryotes.
What will be an ideal response?Look at the label above. What is the maximum time you should keep this medication?
What will be an ideal response?
Small circular, extrachromosomal DNA segments are known as ________.
A. clones B. vectors C. plasmids D. RNA