A botanist studying water lilies in an isolated pond obs...

Question

A botanist studying water lilies in an isolated pond observed three leaf shapes in the population: round, arrowhead, and scalloped. Marker analysis of DNA from 125 individuals showed the round-leaf plants to be homozygous for allele r1, while the plants with arrowhead leaves were homozygous for a different allele at the same locus, r2. Plants with scalloped leaves showed DNA profiles with both the r1 and r2 alleles. Frequency of the r1 allele was estimated at 0.81. If the botanist counted 20 plants with scalloped leaves in the pond, what is the inbreeding coefficient F for this population?

Accepted Answer

Hi, everybody. Let's take a look at this practice problem together, an individual has an inbreeding coefficient of 0.1. It means that what now what is an inbreeding coefficient? Recall that it is the probability of inheriting two identical alleles from a particular gene by descent from a common ancestor. This is the probability then of having a homo zegas genotype and recall that they can be harmful if they cause a genetic disorders. Genetic disorders are commonly Homo ziggy's recessive gene A types. Let's take a look at the options. A the individual has a 10% chance of being homeless, I guess for a given gene Be the individual has a 1% chance of being homeless, I guess. For a given gene, See, the person has a 0.1% chance of having a genetic disorder or d the individual has a 1% chance of being hetero sickness for a given gene. Well, we can automatically eliminate option D. The inbreeding coefficient is about a home ozekis genotype, not a hetero sickness. We can also eliminate option C because the inbreeding coefficient does not predict whether an individual will have a genetic disorder So the inbreeding coefficient is 0.1, 0.1 is 1/10 or 10%. So the correct answers option a the individual has a 10% chance of being homo zegas for a given gene. So the correct answer is option a. Alright, everyone. I hope you found this helpful and I'll see you soon for the next practice problem.

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