Bio. Flashcards Preview

Finals 2013 > Bio. > Flashcards

Flashcards in Bio. Deck (10):
0

Gene

A section of DNA that contains instructions for making 1 trait

1

Allele

Version of a gene (D/R) Humans have 2 genes for each trait (1 on each homologous chromosome)

2

Genotype

The types of the genes of an organism (in their DNA)

3

Phenotype

Observable characteristics of an organism (you can see the trait)

4

Heterozygous

2 different alleles of a particular gene (Aa)
Hybrid=>different

5

Homozygous

2 identical alleles of a particular gene (AA)
Pure bread =>identical

6

Recessive

Gene that's only expressed in homozygous condition (aa)

7

Dominant

Gene that's expressed in homozygous or heterozygous condition (AA or Aa)

8

Gamete

Haploid sex cells created for sexual reproduction

9

Somatic

Cells contain DNA arranged in chromosomes