Alleles produce phenotypes (or physical versions of a trait) that are either dominant or recessive. The dominance or recessivity associated with a particular allele is the result of masking, by which a dominant phenotype hides a recessive phenotype.
How do alleles genes and traits relate to each other?
A gene is a portion of DNA that determines a certain trait. An allele is a specific form of a gene. Genes are responsible for the expression of traits. Alleles are responsible for the variations in which a given trait can be expressed.
How do alleles determine the expression of traits? if the two alleles are dominant then the dominant trait will be expressed. if the two alleles are recessive then the recessive trait will be expressed.
How do alleles influence traits?
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 through sexual reproduction.
What is an allele and how does it relate to a chromosome a gene and a trait?
Gene vs allele: chart
|Definition||A section of DNA that encodes for a certain trait||A variant form of a gene|
|Role||Genes determine individual traits||Alleles contribute the diversity in phenotype expression|
|Determines||An organism’s genotype||An organism’s phenotype|
|Number per genus locus||One||Two|
Different forms of a gene are called alleles. … The alleles an individual has at a locus is called a genotype. The genotype of an organism is often expressed using letters. The visible expression of the genotype is called an organism’s phenotype.
What do the terms gene and allele have in common quizlet?
What do the terms gene and allele have in common? Both could refer to the same DNA sequence.
What happens to the alleles of a gene pair?
The alleles are moved to different chromosomes. The alleles are mutated in the process of mitosis. The alleles are separated during fertilization. The alleles are separated during gamete formation.
When the two alleles of a gene are different?
If the two alleles are the same, the individual is homozygous for that gene. If the alleles are different, the individual is heterozygous.
When two alleles of a gene are the same its genotype is?
A particular genotype is described as homozygous if it features two identical alleles and as heterozygous if the two alleles differ.