What is the expected frequency for a person having tongue rolling ability and attached earlobe???
From Internet:
Attched earlobes: .16 (or 16 percent of the individuals are dominant homozygotes for this trait and have unattached earlobes) (2) heterozygote (Ee = 0.48 (or 48 percent of the individuals in this population is heterozygous at this locus and have unattached earlobes)
Rolling the tongue into a tube shape is often described as a dominant trait with simple Mendelian inheritance, and it is commonly referenced in introductory biology courses.
https://udel.edu/~mcdonald/mythtongueroll.html
To determine the expected frequency of individuals with both tongue rolling ability and attached earlobes, you need to consider the prevalence of each trait separately.
1. Tongue Rolling Ability:
The ability to roll one's tongue is typically considered a dominant genetic trait. Research suggests that about 70% of individuals have this ability, while the other 30% cannot roll their tongues.
2. Attached Earlobes:
Attached earlobes are generally considered a recessive genetic trait. The prevalence of attached earlobes varies among different populations. However, estimates suggest that around 40% of individuals have attached earlobes, while the remaining 60% have free earlobes.
To calculate the expected frequency of individuals with both traits, we multiply the probabilities of each trait occurring. Therefore, the expected frequency would be:
Expected frequency = (Probability of tongue rolling ability) * (Probability of attached earlobes)
Expected frequency = (0.70) * (0.40) = 0.28 or 28%
So, based on these estimates, the expected frequency for a person to have both tongue rolling ability and attached earlobes is approximately 28%.
To determine the expected frequency of a person having both tongue rolling ability and attached earlobes, we need to know the individual frequencies of these traits in the population and assume that they are independent.
Firstly, let's consider tongue rolling ability. This is a trait that follows a simple dominance pattern. Approximately 70% of individuals are able to roll their tongues. Therefore, the frequency of individuals who can roll their tongues would be 0.70 (or 70%).
Next, let's look at attached earlobes. This is a genetic trait that can be either attached or free. The frequency of attached earlobes can vary depending on the population and ethnic backgrounds. Assuming a frequency of 40% for attached earlobes (or 0.40), we can use this value in our calculations.
Now, assuming independence, we can multiply the frequencies of these traits to estimate the expected frequency of someone having both tongue rolling ability and attached earlobes.
Expected frequency = Frequency of tongue rolling × Frequency of attached earlobes
Expected frequency = 0.70 × 0.40
Expected frequency = 0.28, or 28%.
Therefore, we can expect approximately 28% of the population to have both tongue rolling ability and attached earlobes, assuming these traits are independent and the frequencies provided are accurate.