Bio Exam 3 Terms Flashcards Preview

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Flashcards in Bio Exam 3 Terms Deck (10)
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1
Q

Unit of hereditary; encodes the characteristics that determines a phenotype

A

Gene

2
Q

Alternate versions of the same gene at the same locus (in homologous pair) –gene pairs

A

Alleles

3
Q

Both homologous chromosomes carry the same allele at a given gene locus (YY or yy)

A

Homozygous

4
Q

Two homologous chromosomes carry different alleles at a given locus (Yy)

A

Heterozygous

5
Q

Genetic makeup of an organism, determines phenotype (example: Yy)

A

Genotype

6
Q

Appearance or characteristic of an organism = physical traits (example: yellow seeds)

A

Phenotype

7
Q

Allele that dominates over others in determining phenotype (capital letter)

A

Dominant

8
Q

Allele whose phenotypic expression is “hidden” when a dominant allele us present (lowercase)

A

Recessive

9
Q

Evaluate the inheritance pattern of 1 trait

A

Monohybrid cross

10
Q

Evaluate the inheritance patter of 2 traits

A

Dihybrid cross