CYTOGENETICS Flashcards
it is a subdiscipline within genetics that links chromosome variations to specific traits including illnesses.
CYTOGENETICS
Gregor Mendel held that traits were transmitted from gen to gen as discrete, stable unit of heredity called _____ now_-___
factors now genes
research heridetary units started and led to _____
Chromosome theory of Inheritance
Who proposed “Chromosome theory of Inheritance” 1902
Walter Sutton and Theodor Boveri
According to this theory, chromosomes are the carriers of heredity information..”
Chromosome theory of Inheritance
chroma means?
color
soma means?
body
It consists of DNA, RNA and proteins
Chromosome
structure that carriers of hereditary units called genes
Chromosome
two-threadlike very much coiled structure found within chromosome
chromonemata
It consists of a major and minor coils where aggregations of chromatin matetrial, the chromosomes are found
chromonemata
It is the point of attachment of the chromosome to the spindle fibers
centromere
One half of a chromosome
Chromatid
region of repititive DNA at the end of chromosome
Telomere
chromatin that remains condensed and heavily stained during interphase
Hetechromatin
A region of the chromosome that has normal staining properties.
It apparently contains most of the genes
Euchromatin
A small chromosomal segment separated from the main body of chromosome by a secondary constriction.
Satellite
short arm
P Arm
Long arm
Q Arm
With DNA molecule that contains genes in linear order to which numerous proteins are bound.
EUKARYOTES
With telomere at each end and centromere
EUKARYOTES
The DNA is associated with fewer proteins
Lacks telomere and a centromere
Often circular
Prokaryotes
The chromosome is DNA or RNA
Viruses
Single-stranded or double-stranded
Linear or circular
Viruses
Often free of bound proteins.
Viruses
Give at least 1 criteria to distinguished the chromosomes pf different species.
- Constant for a particular species
