Concept explainers
a.
To determine: The chromosome on which the Drosophila genes are located.
Introduction. The law of independent assortment was given in a dihybrid cross which is the cross between the alleles of two pairs of contrasting characters. The alleles produced by each character are independent to combine with the alleles of the other character. This independent sorting of the alleles irrespective of the dominant or the recessive trait is defined as the law of independent assortment.
b.
To determine: The diagram of relevant chromosomes in heterozygous female parent and arrangement of alleles.
Introduction. Genetic testing is one of the most useful tools in diagnostics to identify genetic abnormalities. It helps to detect the presence of any heritable malformation carried through the genetic makeup of the parents to the offspring.
c.
To determine: The map distance between the genes on the chromosome.
Introduction. Linkage is the phenomenon in which two or more genes are linked to each other being present very close to each other on the chromosome. This causes the genes to prevent crossing over and pass on as wild state from parent to offspring.
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Chapter 4 Solutions
Introduction To Genetic Analysis
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