What is the definition of a dominant allele chegg?

How do you define a dominant allele?

Definitions of dominant allele. an allele that produces the same phenotype whether its paired allele is identical or different. synonyms: dominant.

What is a dominant allele quizlet?

A dominant allele is an allele whose trait always shows up in the organism when the allele is present. … A recessive allele is an allele that is masked when a dominant allele is present.

What is the definition of an allele chegg?

Allele Definition

An allele is the alternative and variant form of a gene, which is located on the same locus. It contributes to the phenotype of the organism. The allele is responsible for the phenotype based on whether it is dominant or recessive.

How are dominant and recessive alleles defined?

Dominant refers to the relationship between two versions of a gene. Individuals receive two versions of each gene, known as alleles, from each parent. If the alleles of a gene are different, one allele will be expressed; it is the dominant gene. The effect of the other allele, called recessive, is masked.

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What is a dominant allele Class 10?

– Dominant refers to the relationship between two versions of a gene. If the alleles (two versions of each gene) of a gene are different, one allele will be expressed as Dominant gene while the other allele effect is called recessive. … For example- Baldness, Curly hair is dominant over straight hair etc.

What is a dominant allele Class 12?

– Dominance, in genetics, has a greater effect on one of the pairs of genes (alleles) that affect the same inherited character. If the individual pea plant with alleles T and t (T = height, t = shortness) is the same height as the individual TT, the T allele (and the height trait) is said to be fully dominant.

What is a dominant allele give an example?

Dominant alleles show their effect even if the individual only has one copy of the allele (also known as being heterozygous?). For example, the allele for brown eyes is dominant, therefore you only need one copy of the ‘brown eye’ allele to have brown eyes (although, with two copies you will still have brown eyes).

What makes a dominant allele different from a recessive allele quizlet?

What is the difference between a dominant and recessive allele? A dominant allele is always expressed or evident. it is in a homozygous (BB) or heterozygous (Bb) pair. A recessive allele is only expressed when in a homozygous pair(bb).

What is meant by recessive allele quizlet?

Recessive Allele. An allele that is only expressed in the phenotype of an organism if there are no dominant alleles present.

What is the difference between a gene and an allele chegg?

A gene is a segment of DNA that codes for a protein or RNA; the term allele refers to all of the DNA in a cell or organism.

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What are true of alleles?

An allele is one of the possible forms of a gene. Most genes have two alleles, a dominant allele and a recessive allele. If an organism is heterozygous for that trait, or possesses one of each allele, then the dominant trait is expressed. … A dominant allele is one that will show itself in a cell or in a person’s body.

Which DNA repair pathway targets errors that happen during DNA replication?

Summary. MMR is a conserved pathway that repairs base–base mismatches and small insertion/deletions caused by misincorporation errors during DNA replication.

What is difference between dominant and recessive?

What is the difference between dominant and recessive traits? Dominant traits are always expressed when the connected allele is dominant, even if only one copy of the dominant trait exists. Recessive traits are expressed only if both the connected alleles are recessive.

What is the definition recessive allele?

Recessive refers to a type of allele which will not be manifested in an individual unless both of the individual’s copies of that gene have that particular genotype.