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it is a dominant trait so about 75% i would say

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Q: What percentage of people have detached earlobes?
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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.


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


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%


What is true if a boy is born with detached earlobes?

He has at least ONE E allele


Is detached earlobes recessive or dominant?

Dominant. he has a homozygous genotype


What must be true if a boy is born with detached earlobes?

He has at least ONE E allele


Which describes a Mendelian trait?

humans either have straight thumbs or bent thumbs


How do you understand that attachment of ear lobes are inherited?

Whether or not an ear lobe is attached at its base or not depends on whether or not that person's parents had attached earlobes or not. If both parents have attached earlobes, then their children will also have attached earlobes. If both parents have detached earlobes, then their children will also have detached earlobes. But if one parent has detached earlobes, while the other has attached earlobes, their child's earlobes may be detached, attached, or only slightly attached. This is because each parent provides part of the DNA (deoxyribonucleic acid) molecules that exist at the center of almost every human cell. Since the cells of the body don't "know" anything, they just follow the "instructions" that DNA provides them by building themselves according to how the DNA molecule says they should be built. How this actually works is a complicated chemical process that would be better answered in a separate question, but you don't need to know how it works, only that the result is this - children get some instructions for how to build their body from their mother, and some from their father. If the instructions agree, then the cells that make up the ear will grow a definitely attached or detached earlobe. If the instructions in the child's DNA disagree, then you might get a mix, or the cells might end up paying attention only to one set of instructions or another.


What does it mean if you have two different earlobes?

I would also like to know what does this mean? I have one attached and one detached ear lobe aswell..


Why do more people have attached rather than unattached earlobes?

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


Are ear lobs that are attached dominant or recessive?

It was said earlier that, "Unattached earlobes are the dominant trait, twice as many people have unattached earlobes compared to attached." There is not actually any real proof that unattached earlobes are dominant. While more people may have unattached earlobes, attached earlobes are dominant. This was proved in a pedigree which covered three generations of extended families.