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About 30% of the population in the US.

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Q: What is percent of having attached earlobes?
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What is the probability of having a child with attached earlobes when an individual with attached earlobes mates with an individual heterozygous for free earlobes?

Attached earlobes are a recessive trait. When one parent has attached earlobes and the other is heterozygous for free earlobes, the chances of any particular offspring having attached earlobes is fifty percent.


Earlobes can be either attached or detached. The allele for attached earlobes is recessive and the allele for detached earlobes is dominant. What must be true is a boy is born with attached earlobes?

He has a homozygous genotype


What percentage of people in United States have detached earlobes?

Studies show that roughly seventy percent of people in the world have detached earlobes, leaving thirty percent with attached earlobes. However, this is only a rough estimate based on data collected.


Does gender matter when determining the odds of someone having attached or unattached earlobes?

No knucklebrain


Why do more people have attached rather than unattached earlobes?

Cause attached earlobes are the dominant trait. Unattached earlobes are reccessive.


What is the ratio of free earlobes to attached earlobes?

88:69


Both you and your sister or bother have attached earlobes yet your parents have unattached earlobes unattached earlobes are dominant over attached earlobes what are the genotypes of your parents?

the gene is not shown in their chara ter


How can you tell if you have attached or detached earlobes?

If they attach directly to the side of the head, they are attached earlobes. If they don't they are unattached.


What is the probability that a father produces a gamete with the allele for attached earlobes if he has one allele for detached earlobes and one allele for attached earlobes?

50%


Have both parents got to have ear lobes to have a child with lobes?

No, (free) earlobes follow a simple genetic dominance relationship, where free earlobes are dominant over attached earlobes. Meaning that having one parent with free earlobes suffices for the child to also share that trait.


What are the phenotype attach earlobes?

Earlobes that are attached to the face rather than ones that hang freely (de-attached)


What is the probability of having a child with an attached earlobe?

Whether or not the earlobe is attached is a genetically inherited trait and so you would need to look at earlobes in your, and your partner's, families.