Telomerase: Definition, Structure, and Function
Telomerase Definition Telomerase is an enzyme found inside our cells, which may be related to the aging process. It adds …
Genetic
Substitution Mutation: Definition, Types, Causes & Example
Substitution Mutation Definition A substitution mutation is a type of replication error during DNA replication which places the wrong nucleotide or sequence of nucleotides in the …
Sister Chromatids: Definition, Structure, and Function
Sister Chromatids Definition Sister chromatids are two identical copies of the same chromosome formed by DNA replication, attached to each other by a …
Silent Mutation: Definition and Example
Silent Mutation Definition A silent mutation is a change in the sequence of nucleotide bases which constitutes DNA, without a subsequent change in the …
Sex-Linked Gene: Definition, Overview, and Example
Sex Linked Genes Definition Sex linked genes are genes that are in the sex chromosomes and that are therefore inherited differently between males and …
Sex Chromosomes: Definition and Types
Sex Chromosomes Definition Sex chromosomes are chromosomes that determine whether the individual is male or female. Though these two chromosomes …
Recessive Allele: Definition and Example
Recessive Allele Definition A recessive allele is a variety of genetic code that does not create a phenotype if a …
Phenotype: Definition and Examples
Phenotype Definition A phenotype is the physical expression of DNA. In contrast, the genotype is the chemical makeup of DNA …
Multiple Alleles: Definition and Example
Multiple Alleles Definition Multiple alleles exist in a population when there are many variations of a gene present. In organisms …
What is Law of Segregation?
Law of Segregation Definition Gregor Mendel’s law of segregation states that the two alleles for each trait segregate, or separate, …