A genetic condition is found equally in boys and girls, and appears from two unaffected parents. This condition is likely
1.autosomal dominant.
2.autosomal recessive.
3.X-linked recessive.
4.X-linked dominant.
2
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Which is the correct sequence of events for protein degradation in eukaryotes?
A. ubiquitin binds target protein ? protein unfolds and enters proteasome ? protein directed to proteasome ? protein digested ? amino acids are released and recycled B. ubiquitin binds target protein ? protein directed to proteasome ? protein unfolds and enters proteasome ? protein digested ? amino acids are released and recycled C. protein directed to proteasome ? ubiquitin binds target protein ? protein unfolds and enters proteasome ? protein digested ? amino acids are released and recycled D. protein directed to proteasome ? protein unfolds and enters proteasome ? ubiquitin binds target protein ? protein digested ? amino acids are released and recycled E. protein directed to proteasome ? protein unfolds and enters proteasome ? protein digested ? ubiquitin binds target protein ? amino acids are released and recycled
At which phase of the cell cycle are sister chromatids generated?
A) G0 B) G1 C) G2 D) S E) M
The entire process of producing two cells from one
cell a. starts with prophase. b. ends with cytokinesis. c. results in the equal distribution of organelles between cells. d. occurs only in multicellular organisms. e. starts with prophase and ends with cytokinesis.
The form of RNA that carries the code from the DNA to the site where the protein is assembled is
called a. messenger RNA. b. nuclear RNA. c. ribosomal RNA. d. transfer RNA. e. structural RNA.