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Yes, it is possible for two tongue-rolling parents to have a non-tongue-rolling baby. Tongue rolling is often considered a genetic trait, typically associated with a dominant allele. However, if both parents carry a recessive allele for non-tongue rolling, there is a chance they could pass that trait to their child, resulting in a non-tongue-rolling offspring.
Tongue rolling is homozygous dominant and all issue from this pairing will be tongue rollers. This is the only result that is allowable with a standard Punnett square or branch diagram representation. T = tongue roller t = non-tongue roller TT X tt = 4 Tt ======With tongue rolling expressed.
A trait controlled by many genes
Languages that do not require rolling the tongue include English, Mandarin Chinese, and Russian. These languages may be easier for individuals who struggle with rolling their tongue to learn.
Yes, there are statistics about tongue rolling. You can find these statistics online on websites like OMGFacts.com. Approximately 67 percent of females and 64 percent of males are able to roll their tongues.
no it is recessiveFamily studies clearly demonstrate that tongue rolling is not a simple genetic character, and twin studies demonstrate that it is influenced by both genetics and the environment. Despite this, tongue rolling is probably the most commonly used classroom example of a simple genetic trait in humans. Sturtevant (1965) said he was "embarrassed to see it listed in some current works as an established Mendelian case." You should not use tongue rolling to demonstrate basic genetics.No. Your mom is.
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The expected frequency would be determined by calculating the probability of someone having both traits based on their individual frequencies in the population. This would involve multiplying the frequency of tongue rolling ability by the frequency of attached earlobes in the population. For example, if 70% of the population can tongue roll and 60% have attached earlobes, the expected frequency would be 0.70 x 0.60 = 0.42, or 42%.
Tongue rolling ability is primarily genetic, meaning it is inherited and not something that can be learned or acquired. It is controlled by a single gene with two possible variations, determining whether an individual can roll their tongue or not.
The expected frequency can be calculated using the product rule in probability. If we assume that the ability to roll the tongue and having attached earlobes are independent, then we can multiply the frequencies of each trait in the population to get the expected frequency of individuals with both traits.
The genotype for an individual who is heterozygous for both traits of tongue rolling and cleft chin would be RrCc. "R" represents the dominant allele for tongue rolling and "r" represents the recessive allele for non-tongue rolling, while "C" represents the dominant allele for cleft chin and "c" represents the recessive allele for no cleft chin.