K Lysine in proteins karyotype A photomicrograph of individual chromosomoes arranged in
a standard format showning the number, size and shape of
each chromosome type; used in low-resolution physical
mapping to correlate gross chromosomal abnormalities with
the charactersitics of specific diseases. kb kilobase, a unit of length for DNA fragments equal to
1000 nucleotides kernel The lowest level of the UNIX operating system. Shells and
UNIX commands interact with the kernel, which in turn,
interacts with the hardware. kill A UNIX command that can terminate one or more process
IDs. kilobase (kb) Unit of length for DNA fragments equal to 1000
nucleotides kilocalorie Unit of heat energy equal to 1000 calories. Used to
express the energy content of food or molecules. Bond
strengths are often measured in kcal/mole. kinetochore The part of the centromere to which spindle microtubles
attach knockout mouse A mouse that has been engineered so that it carries an
inactivated gene Kozak consensus The nucleotide sequence surrounding the initiation codon
of a eukaryotic mRNA. Krebs Cycle The citric acid cycle. The central metabolic pathway
found in all aerobic organisms. Occurs in mitochondria in
eucaryotic cells. Converts acetyl groups derived from food
molecules to CO2 and H2O ksh Korn shell command interpreter in UNIX ktuple or ktup The word size used to make the hash table in teh FASTA
program.
