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Genes are pieces of hereditary material that are passed from parents to offspring. Genes are part of cell structures called chromosomes. In multicellular organisms, chromosomes are found in the nucleus of the cell. Each of these chromosomes contains one, long molecule of DNA, or d eoxyribo n ucleic a cid.
In the cytogenetic map at the top, the sc gene is located at band 1A8, and the w gene is located at band 3B6. In the linkage map in the middle, genetic crosses indicate that the two genes are approximately 1.5 map units (mu) apart. The physical map at the bottom shows that the two genes are approximately 2.4 x 10^6 bp apart along the X chromosome.
One map unit (also known as one centimorgan) equals 1% recombination frequency. Map unit measures the genetic linkage ; that is the distance between two linked genes (the functional unit of heredity) and concludes how far or how close they are .
Study with Quizlet and memorize flashcards containing terms like A transformation experiment is performed with a donor strain that is resistant to four drugs, A, B, C, and D, determined by genes A, B, C, and D. The recipient strain is sensitive to all four drugs. The treated recipient-cell population is divided up and plated on media containing various combinations of the drugs. A cell that is ...
Genetics 2. The measured distance between genes D and E in a two-point testcross is 50 map units. Which describe the relationship between genes D and E? Click the card to flip 👆. D and E are on the same chromosome, at least 50 map units apart or D and E are on different homologous chromosomes.
Choose the true statement about housekeeping genes in Escherichia coli. -Housekeeping genes are constitutively expressed. Choose the true statement (s) about mutations. To be marked correct, you'll need to select all true statements, as there may be more than one correct answer. -Mutation leads to genetic and phenotypic variation within a species.
Study with Quizlet and memorize flashcards containing terms like A strain of E. coli that frequently transfers chromosomal genes to recipient bacterial cells is designated a(n) Hfr strain. F+ strain. (An HFR strain is formed when a plasmid recombines with the cells chromosome.) virulent strain. F- strain., What event leads to the formation of an Hfr strain? Exposure to high temperatures ...
