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Row 1, Col 1 translocation. A mutation caused by a piece of DNA breaking away from its chromosome and becoming attached to a nonhomologous chromosome is called

1,2 a gamete will receive too many or too few copies of a chromosome. If nondisjunction occurs what Happens?

1,3 chromosome. Trisomy is a mutation that results in a cell having an extra…

1,4 47 chromosomes. People with Down syndrome have How many chromosomes?

2,1 their genes will be expressed only when needed. Cells must control gene expression so that

2,2 blocks movement of RNA polymerase. What does a repressor protein do?

2,3 operon. In bacteria, a group of genes that code for functionally related enzymes, their promoter site, and the operator that controls them all function together as a(n).

2,4 regulate access of RNA polymerase to specific genes. The function of an operator is to

3,1 RNA polymerase The presence of a repressor protein prevents the action of what enzyme?

3,2 regulatory proteins. Transcription factors are

3,3 exons. The portions of DNA molecules that actually code for the production of proteins are called

3,4 introns. The non-coding portions of DNA that are separated from the portions of DNA actually used during transcription are called.

4,1 an exon may be used by many different genes. Many thousands of proteins may have arisen from only a few thousand exons because

4,2 a plasmid Which type of DNA (an MGE) is not found in eukaryotes?

4,3 the mitochondria Which cell organelle contains its own DNA?

4,4 moves in a genome An MGE is a unit of DNA or RNA that

5,1 nucleus Which of the following things is never found as a part of a virus?

5,2 a leg growing in the wrong place What could result from a mutation in a homeotic gene?

5,3 cancer Which disease is caused by a problem in the regulation of the cell cycle?

5,4 Frameshift mutation What type of mutation results when any nucleotide(s) is(are) added or deleted not in multiples of three

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