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Q: What is the ratio of free earlobes to attached earlobes?
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In humans the allele for free hanging earlobes is dominant over the one for attached earlobes What are the possible genotypes of a person with free hanging earlobes?

50%. Heterozygous means that there is two different traits inside of the gene. Therefore you have (aa) for the free earlobes and the other individual with attached (Aa). Drawing a Punnett square you get (aa) in two different spots, creating 50% probability.


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.


What ratio of genotypes and phenotypes are found after two heterozygous indivividual are crossed for a trait of earlobes?

Genotypes (phenotype) 25% homozygous dominant (free earlobes) 25% homozygous recessive (attached earlobes) 50% heterozygous (free earlobes) 75% phenotypically dominant (free earlobes) 25% phenotyically recessive (attached earlobes) Ratios Genotype 1:1:2 Phenotype 3:1


Free earlobes in humans is a dominant trait if two parents with free earlobes have children with attached earlobes the genotype of the parents must be?

the genotype would be for the mom Ee and for the dad it would be Ee.


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.


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 are attached and free earlobes inherited?

It all depends on the genes that are being inherited.


Why do more people have attached rather than unattached earlobes?

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


What is a free earlobe?

A free earlobe is an earlobe that is not entirely attached to the head. The gene for free earlobes is dominant in most cases.


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 happens when a person receives on alle for attached earlobes and one for unattached earlobes?

there one alle for free ear-lobes and another allele for attached if your gene for ear-lobes is made up of two alleles for free ear-lobes your ear-lobes are NOT attached and if you have two attache-ear-lobes alleles your ear-lobes are attached