What are alleles quizlet biology?

What are alleles in biology?

An allele is a variant form of a gene. Some genes have a variety of different forms, which are located at the same position, or genetic locus, on a chromosome. … Alleles contribute to the organism’s phenotype, which is the outward appearance of the organism. Some alleles are dominant or recessive.

What is alleles short answer?

Alleles are also genetic sequences, and they too code for the transmission of traits. … The short answer is that an allele is a variant form of a gene. Explained in greater detail, each gene resides at a specific locus (location on a chromosome) in two copies, one copy of the gene inherited from each parent.

What is the best definition of an allele quizlet?

An Allele is best defined as. a specific form of gene. An allele is an alternative form of a gene located on a specific site of a chromosome. One allele is inherited from the mother and one from the father.

What are alleles A level biology?

Definitions: Allele – Alternative forms of a gene occupying a position on a chromosome. Heterozygous – has two different alleles (example Rr). Homozygous – has two alleles the same (example RR or rr). … Recessive – An allele that affects the phenotype of the organism only if a dominant allele is not present.

IT IS INTERESTING:  Which of the following statements are true about mitosis and meiosis?

What is the best definition of allele?

An allele is one of a pair of genes that appear at a particular location on a particular chromosome and control the same characteristic, such as blood type or color blindness. Alleles are also called alleleomorphs. Your blood type is determined by the alleles you inherited from your parents.

What is allele class 10th?

Alleles are a pair of alternative forms of a gene. Each gene is present in two alternative forms, each called an allele. Each allele controls a single trait. Traits can be either dominant or recessive.

What is an allele Class 12?

An allele is an alternative form of a gene. It is located at a specific position on a specific chromosome. These can be passed on from parents to offspring through sexual reproduction.

What is the definition of an allele quizlet?

An allele is an alternative form of a gene (one member of a pair) that is located at a specific position on a specific chromosome. These DNA codings determine distinct traits that can be passed on from parents to offspring. … They are exactly like their parents. It only has one division and that leads to two cells.

What is an allele quizlet mastering biology?

What is an allele? a type of chromosome. the dominant form of a gene. an alternative version of a gene. a variety of pea plant used by Mendel.