DP Biology Vocabulary - 3.2 Chromosomes
Essential vocabulary for the IBO DP Biology course
Terms in this set (21)
one of the possible alternatives of a gene, occupying a specific position on a chromosome, that controls the same trait.
technique that relies on the emission of radioactive particles from within the subject to produce an image.
chromosomes that do not determine sex.
region of the chromosome that becomes attached to the spindle fibres during cell division.
a structure within the cell that bears the genetic material as a thread-like linear strand of DNA that carry the genes in a linear order (the human species has 23 pairs).
have nuclei containing two sets of chromosomes (2n), one set from each parent.
a human genetic disease resulting from having an extra chromosome 21 (characterized by having a delay in mental development).
a hereditary unit consisting of a sequence of DNA that occupies a specific location on a chromosome and determines a particular characteristic in an organism.
the total genetic material of an organism.
have one chromosome of each pair (have one full set of the chromosomes that are found in its species).
globular proteins associated to chromosomes in eukaryotic cells.
chromosome pairs with genes for the same characteristics at corresponding loci.
shows the chromosomes of an organism in homologous pairs of decreasing length.
a method of organizing the chromosomes of a cell in relation to number, size, and type.
the position of the gene on the chromosome (loci plural).
the DNA in prokaryotic cells that is not associated with proteins.
the DNA of prokaryote in the circular chromosome.
Sequencing of DNA
to determine the order of nucleotide bases in a DNA molecule.
the pair of chromosomes responsible for determining the sex of an individual.
replicated forms of a chromosome joined together by the centromere and eventually separated during mitosis or meiosis.
treating (specimens for the microscope) with a reagent or dye that makes certain structures visible without affecting others.
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