In butterflies wing color, foot size and body shape are found on the same chromo
ID: 30525 • Letter: I
Question
In butterflies wing color, foot size and body shape are found on the same chromosome. Wing color is incompletely dominant with blue, red and purple. Small feet are dominant to large feet. Finally, a long body is dominant to a short body. The following data was collected : Offspring resulting from crossing purple small footed butterflies and red large footed butterflies purple small footed butterflies 330 red large footed butterflies 325 red small footed butterflies and 35 purple large footed butterflies 40 Offspring resulting from crossing small footed long body butterflies with a large footed short body butterflies small footed long body butterflies 450 large footed short body butterflies 480 large footed long body butterflies 25 short footed short body butterflies 35 Offspring resulting from crossing purple long body butterflies with blue short body butterflies purple long body butterflies 215 blue short body butterflies 205 blue long body butterflies 35 purple short body butterflies 45 1 What is the crossver rate between each of the linked genes. 2. Make a diagram showing the relationship between the genes on a chromosome map.Explanation / Answer
A linkage map is a genetic map of a species or experimental population that shows the position of its known genes or genetic markers relative to each other in terms of recombination frequency, rather than a specific physical distance along each chromosome. Linkage mapping is critical for identifying the location of genes that cause genetic diseases.
A genetic map is a map based on the frequencies of recombination between markers during crossover of homologous chromosomes. The greater the frequency of recombination (segregation) between two genetic markers, the further apart they are assumed to be. Conversely, the lower the frequency of recombination between the markers, the smaller the physical distance between them.
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