Parental Imprinting At Biology Glossary

What is it? See molecular imprinting.

Bio Definition Added By: Sean

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Other Similar Biology Terms:

Bio Term position effect is Used to describe a situation in which the phenotype expressed by a gene is altered by changes in the position of the gene within the genome. For instance genes translocated to regions of heterochromatin are often not expressed.

Bio Term degrees of freedom is An estimate of the number of independent categories in a particular statistical test or experiment.

Bio Term cis-trans complementation test is A mating test to determine whether two different recessive mutations (a1;a2) on opposite chromosomes (trans, a1+/+a2) of a diploid or partial diploid will not complement (ie have a mutant phenotype) each other; but the same two recessive mutations on the same chromosome (cis, a1a2/++) in a diploid or partial diploid show a wild-type phenotype. A test for allelism. A test to determine whether two mutant sites are in the same functional unit or gene.

Bio Term Hfr is High frequency of recombination. A strain of bacteria that has incorporated an F factor into its chromosome and can then transfer the chromosome during conjugation. In Escherichia coli, a cell having its fertility factor integrated into the bacterial chromosome; a donor (male) cell.

Bio Term metrical variation is See continuous variation.