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Consider the following segment of double-stranded DNA, which is part of a much longer molecule constituting a chromosome. This sequence is located ~2000bp to the left of its origin of replication. 5′ AGACTATAGTCATGC 3′3′ TCTGATATCAGTACG 5′At this site, synthesis of an RNA primer begins by copying at the bp shown […]

Q1. Short hair rabbits are gorvened by a dominant gene L and long hair by recessive alleleL. Black hair is the result of the action of the dominant genotype Band brown from the recessive genotype bb. In cross between dihybrid short, black and homozygous short, brown rabbits, what genotypic and […]

Some chemotherapy drugs act by attaching themselves to the growing strand of a DNA molecule, thus preventing its replication. Cells on which phase of the cell cycle would be affected by this drug? Cells that never divide, that are in G0 Cells that havenÕt started the S phase and are […]

A particular Drosophila female that is wild-type in appearance is known to be heterozygous for the three recessive mutations black body (b), curved wings (c) and purple eyes (p). When this female is testcrossed, the following progeny result:Black body, purple eyes – 27Curved wings -23Black body, curved wings – 361Purple […]