Examlex
One advantage of the Kelvin system is that it is impossible to have temperatures below zero.
Heterozygous
Having two different alleles at a specific locus on a pair of homologous chromosomes, resulting in genetic variation.
Genetic Locus
A specific, fixed position on a chromosome where a particular gene or genetic marker is located.
X Chromosomes
One of the two sex chromosomes, present in both males (XY) and females (XX), that determine sexual differentiation in humans.
Phenylalanine Hydroxylase
An enzyme that converts phenylalanine into tyrosine, thus playing a crucial role in amino acid metabolism.
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