What is an allele?(1 point)
Responses
a variant form of a gene
a variant form of a gene
a trait that appears in an offspring if one of the parents contributes it
a trait that appears in an offspring if one of the parents contributes it
a non-inherited trait
a non-inherited trait
a trait that can be masked
by another allele in a heterozygous individual
a trait that can be masked
An allele is a variant form of a gene, which is a segment of DNA that codes for a specific trait or characteristic. Genes can have different forms, known as alleles, which can result in different versions of the trait.
For example, let's say there is a gene that codes for eye color. The gene can have different alleles, such as "brown" and "blue." Each allele represents a different version of the trait, in this case, eye color. So, if someone has the allele for brown eyes, they will have brown eyes, while someone with the allele for blue eyes will have blue eyes.
To determine the alleles for a particular gene, scientists often conduct genetic analysis using techniques such as DNA sequencing or polymerase chain reaction (PCR) to examine the specific sequence of DNA bases that make up the gene. This helps identify the different forms or variants of the gene, which are the alleles.
Understanding alleles and their interactions is important in genetics and inheritance. By studying different alleles and their effects, scientists can gain insights into the inheritance patterns of traits and diseases, and also explore ways to modify or manipulate traits through genetic engineering or selective breeding.