Module 8 Vocabulary Flashcards Preview

Exploring Creation with Biology > Module 8 Vocabulary > Flashcards

Flashcards in Module 8 Vocabulary Deck (19)
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1

True Breeding

If an organism has a certain characteristic that is always passed onto it's offspring, we say that this organism is bred true

2

Allele

One pair of genes that occupies the same position on homologous chromosomes

3

Genotype

Two-letter set that represents the alleles an organism possesses for a certain trait

4

Phenotype

The observable expression of an organisms genes

5

Homozygous Genotype

A genotype in which both alleles are identical

6

Dominant Allele

An allele that will determine that will determine phenotype if just one is present in the genotype

7

Recessive Allele

An allele that will not determine the phenotype unless the genotype is homozygous in that allele

8

Pedigree

A diagram that follows a particular phenotype through several generations

9

Monohybrid Cross

A cross between two individuals, concentrating on two definable traits

10

Dihybrid Cross

A cross between two individuals, concentrating on two definable traits

11

Autosomes

Chromosomes that do not determine the sex of an individual

12

Sex Chromosomes

Chromosomes that determine the sex of an individual

13

Antigen

A protein that, when introduced in the blood, triggers the production of an antibody

14

Autosomal Inheritance

Inheritance of a genetic trait not on a sex chromosome

15

Genetic Disease Carrier

A person who is heterozygous in a recessive genetic disorder

16

Sex-Linked Inheritance

Inheritance of a genetic trait located on the sex chromosomes

17

Mutation

A radical chemical change in one or more alleles

18

Change In Chromosome Structure

A situation in which a chromosome loses or gains genes during meiosis

19

Change In Chromosome Number

A situation in which abnormal cellular events in meiosis lead to either none of a particular chromosome in the gamete or more than one chromosome in the gamete.