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fall final study guide
fall final study guide

... both males and females. a. True b. False 16. The law of independent assortment applies only to genes that are a. sex-linked. b. located on different chromosomes or are far apart on the same chromosome. c. located on the same chromosome. d. autosomal. 17. Humans can have blood phenotypes of A, AB, B, ...
Biology Final Exam Multiple Choice Identify the choice that best
Biology Final Exam Multiple Choice Identify the choice that best

... thigh bone, are involved in walking. In whales, the pelvis and femur shown in Figure 16–1 are a. examples of fossils. b. vestigial structures. c. acquired traits. d. examples of natural variation. ...
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... • How does the tRNA know which amino acid to bring to the ribosome? • Each 3 bases in the mRNA (called a codon), codes for a single amino acid. • A tRNA molecule has three bases on it that are complementary to the codon, called an anticodon. • Each tRNA carries only the amino acid that it’s anticod ...
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to print

... • When semen is deposited at the base of the uterus, the sperm must first cross the barrier of the cervix and then up the lining of the uterus into the Fallopian tubes to reach the egg. – Only one of the Fallopian tubes contains an egg, so many sperm travel in the wrong direction. – This process mus ...
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Genetics 101 - hrsbstaff.ednet.ns.ca
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... incorrect so a faulty protein is made or the control switch is changed. A variation in a gene that creates a fault is called a pathogenic variant or mutation. These are quite rare. A DNA mutation may cause a problem for one cell type but not another, since not all cells use all of the possible prote ...
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Ch 12-15 Unit Overvi..

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Biology Final Study Guide
Biology Final Study Guide

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... • At Initiation RNA polymerase binds start of gene and uncoils DNA. • At Elongation RNA polymerase moves along the gene briefly binding nucleotides to DNA (only about 10 nucleotides at a time), as the RNA nucleotides join together in a making a single complimentary strand • At Termination the mRNA m ...
Name - PSUSDscienceresources
Name - PSUSDscienceresources

... the tongue. This is because A cells in the tongue do not contain amylase genes. B cells in the tongue do not express the amylase genes. C DNA varies from cell to cell based on the cell's needs. D cells in the tongue send amylase to the salivary gland cells. ...
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Extrachromosomal DNA



Extrachromosomal DNA is any DNA that is found outside of the nucleus of a cell. It is also referred to as extranuclear DNA or cytoplasmic DNA. Most DNA in an individual genome is found in chromosomes but DNA found outside of the nucleus also serves important biological functions.In prokaryotes, nonviral extrachromosomal DNA is primarily found in plasmids whereas in eukaryotes extrachromosomal DNA is primarily found in organelles. Mitochondrial DNA is a main source of this extrachromosomal DNA in eukaryotes. Extrachromosomal DNA is often used in research of replication because it is easy to identify and isolate.Extrachromosomal DNA was found to be structurally different from nuclear DNA. Cytoplasmic DNA is less methylated than DNA found within the nucleus. It was also confirmed that the sequences of cytoplasmic DNA was different from nuclear DNA in the same organism, showing that cytoplasmic DNAs are not simply fragments of nuclear DNA.In addition to DNA found outside of the nucleus in cells, infection of viral genomes also provides an example of extrachromosomal DNA.
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