Quick Answer: What is an example of a recessive allele?

What is a recessive allele?

Definition. A type of allele that when present on its own will not affect the individual. Two copies of the allele need to be present for the phenotype to be expressed.

What are 2 recessive alleles?

When a trait is recessive, an individual must have two copies of a recessive allele to express the trait. Recessive alleles are denoted by a lowercase letter (a versus A).

What are some recessive traits?

Single Gene Traits

Traits Dominant Recessive
Hairline Widow’s peak Straight
Hair color White hair streak Normal hair color
Handedness Right handedness Left handedness
Hitchhiker’s thumbs Absence Presence

What are examples of dominant and recessive genes?

An allele of a gene is said to be dominant when it effectively overrules the other (recessive) allele. Eye colour and blood groups are both examples of dominant/recessive gene relationships.

Which best describes a recessive allele?

The best description of a recessive allele is that in does not determine the phenotype when a dominant allele for the same trait is present.

What is recessive allele Class 10?

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.

What is heterozygous recessive example?

One such example is brown eyes (which is dominant) and blue eyes (which is recessive). If the alleles are heterozygous, the dominant allele would express itself over the recessive allele, resulting in brown eyes.

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Is tall a recessive gene?

A pea plant could have a copy of the height gene that coded for “tall” and a copy of the same gene that coded for “short.” But the tall allele is “dominant,” meaning that a tall-short allele combination would result in a tall plant.

Is Hemophilia dominant or recessive?

Hemophilia is a sex-linked recessive disorder. The abnormal gene responsible for hemophilia is carried on the X chromosome. Males have one X chromosome and one Y chromosome.