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What are some example of dominant and recessive traits in humans?
Dwarfism is a dominant trait in humans.
What are some patterns of inheritance in humans?
Autosomal dominant Autosomal recessive X linked recessive.
What are some patterns of humans inheritance?
Autosomal dominant Autosomal recessive X linked recessive.
What are the two different alleles for a gene?
I think it is Dominant and recessive.
What genes are recessive traits?
These traits are called dominant traits. They will overcome the recessive gene and the dominant trait will be expressed. A recessive gene needs two alleles present in its genotype to be expressed.
Is there a relationship between the frequency of a trait in a population and whether that trait is dominant or recessive?
Some observable traits in humans are dimples, earlobes, tongue-rolling, cleft chin, hairline, and freckles. The relationship between the frequency of a trait in a population and whether the trait is dominant or recessive because in inherited human traits, the offspring can either have dimples or no dimples.
Recessive allele is more common or dominant allele?
Not necessarily. I think the dominant genes are more common, but there are lot of exceptions out there. For example, having six fingers in humans is a dominant gene, but it isn't all that common.
What is the factor that seems to disappear due to a dominant allele?
An allele is one particular form of a gene. A large population of living things typically have several different allele for any particular gene. For example, one important gene in humans determines blood type compatibility. That gene comes in 3 different alleles -- A, B, and O. Most plants and animals are diploid -- they have 2 of each gene, one inherited from each parent. For example, any one human has one of six possible genotypes for that gene: AA, BB, OO, AB, AO, BO. A recessive allele seems to disappear when paired with a dominant allele. If something has a dominant and recessive allele, the dominant will overshadow the recessive, but the recessive will still be there (just not showing). For example, the O allele is recessive when paired with the A allele, which is dominant, and so humans with the AO genotype as well as the AA genotype have "type A blood". Only humans with the OO genotype show "type O blood". According to the Wikipedia "allele" article, some people once thought that all genes had only one "normal" allele, which was both common and dominant, and all other versions of that gene (all other alleles) were rare and recessive. However, most genes have many different "normal" alleles, whose frequencies vary from one population to another. With some genes, the most common allele is recessive.
Which genotype would result in an individual with the dominant phenotype?
In classic genetics: AA or Aa for autosomal dominance; for sex-linked dominance, females will need XX or Xx, while males will need Xy It gets more complicated with epistasis and other factors that modulate the genes.
Can both dominant and recessive traits be expressed?
If by "all dominant phenotypes" you mean the parents are homozygous, then no. AA x AA will never yield a gamete with AA But if you're talking about heterozygous chromosomes Aa x Aa, then yes
What is an example of recessive human trait?
1. freckles: dominant no freckles: recessive 2. dark eyes: dominant light eyes: recessive 3. free earlobe:dominant attached earlbe: recessive 4. polydactilism (6 fingers or toes): dominant 5 fingers or toes: recessive 5. normal chin: recessivecleft chin: dominant 6. can roll tongue: dominant cannot roll tongue: recessive 7. cannot fold tongue: dominant can roll tongue: recessive 8. straight pinkie: dominant crooked pinkie: recessive 9. widow's peak: dominant straight hairline: recessive 10. separate eyebrows: dominant uni-brow: recessive
Are ears that point outwards the result of dominant or recessive genes in humans?
Ears that point outwards are typically the result of a dominant gene in humans. This trait, known as "protruding ears," is influenced by several genes. However, the exact genetic mechanisms are not completely understood.
