ch 17

what is the genetic makeup of an organisim

what is the observable characteristic of an organisism

different forms of the same gene is an

traits exist in 2 forms

• domanit

• phenotype

• geneotype

• recessive

___ is an allele whose phenotype is expressed when it is present

___ is an allele that is masked by the dominat allele

the recessive allele is present when

• expressed in both genes

• expressed in one gene

• always expressed

• never expressed

2 identical alleles

2 different alleles

what does homozygous dominat look like

• TT

• Tt

• tt