Dif. Genes, Same Traits
Linkage and Recombination
Gene Expression
100

The test that can show a parental genotype.

Test cross

100

Genetic information moving across chromatids

Crossing over

100

The way that cells control genetic expression

Regulation

200

The ratio of a dihybrid cross

9:3:3:1

200

The unit that describes the distance between alleles on a chromosome. 

Map units

200

The outcome of DNA methylation

Silencing of the gene, no expression

300

The maximum amount of genes that can impact a single trait

Lots!

300

The common insect used for tests for genetic inheritence

Drosophila Melanogaster

300

The three units of the Lac Operon

LacZ, LacY and LacA

400

The effect of a modifier gene

A gene that alters the expression of another, separate "target" gene

400

The maximum map units that can be calculated with only 2 alleles, noting that they are additive and could be more than this

50 map units

400

The use of a DNA microarray

Test for DNA expression in different cells types