As a chromosome with a new gene duplicate spreads through a population, there is polymorphism in the number of copies of the gene that individuals carry. This situation, called copy number variation.

TLS Online TPP Program

#Id: 8987

#Section 3: Genetics, Cellular and Molecular Biology

Allele frequency when genotype frequency is given

TLS Online TPP Program

#Id: 8104

#Section 2: General Biology

The venoms of poisonous snakes contain (among other things) a class of enzymes known as phospholipases, enzymes that cause the breakdown of phospholipids

TLS Online TPP Program

#Id: 8184

#Section 3: Genetics, Cellular and Molecular Biology

β oxidation

In mammalian cells, occurs in mitochondria & peroxisomes.

In yeast and plant cells, occurs in peroxisomes.

TLS Online TPP Program

#Id: 8619

#Section 3: Genetics, Cellular and Molecular Biology

INK4s

bind to CDK4 and CDK6 monomers, blocking their interaction with cyclin D

TLS Online TPP Program

#Id: 8960

#Section 3: Genetics, Cellular and Molecular Biology

Duplicate gene and its parental copy can subfunctionalize so that each carries out only some of the roles that the ancestral gene performed. 

Ex- a duplicate of the β-hemoglobin locus is expressed in the fetus.