09.B BIO, C1 Punnett Squares (PART B)

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9 Terms

1

Genotype

The genetic makeup of an organism

2

Phenotype

The physical characteristics of an organism

3

Testcross

A cross between an organism whose genotype for a certain trait is unknown and an organism that is homozygous recessive for that trait so the unknown genotype can be determined from that of the offspring

<p>A cross between an organism whose genotype for a certain trait is unknown and an organism that is homozygous recessive for that trait so the unknown genotype can be determined from that of the offspring</p>
4

Monohybrid cross

A cross between two individuals, concentrating on only one trait

<p>A cross between two individuals, concentrating on only one trait</p>
5

Dihybrid cross

A cross between two individuals, concentrating on two traits

<p>A cross between two individuals, concentrating on two traits</p>
6

Probability

The likelihood an event will occur

<p>The likelihood an event will occur</p>
7

Punnett square

A diagram that shows the possible results of a genetic cross; parents' gametes on top and left, offsprings' genotypes inside

<p>A diagram that shows the possible results of a genetic cross; parents' gametes on top and left, offsprings' genotypes inside</p>
8

Ratio

The quantitative relationship between two amounts showing the number of times one value contains or is contained within the other; i.e three to 1 (3:1) or one to two to one (1:2:1)

9

Percentage

A part of a whole expressed in hundredths