Heredity Vocab Flashcards Preview

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Flashcards in Heredity Vocab Deck (22):
1

Dominant Trait

The trait observed in the first generation when parents that have different traits are bred

2

Recessive Trait

A trait that reappears in the second generation when parents with different traits are bred

3

Gene

One set of instructions for an inherited trait

4

Allele

Different forms of a gene

5

Phenotype

An organism's appearence or other detectable characteristics

6

Genotype

The combination of genes for one or more traits

7

Mitosis

Cell divison that results in two cells with equal number of chromosomes to the original cell

8

Meiosis

Cell divison that results in four cells with half the chromosomes from the original cell

9

Identical Twins

The fertilized egg divides into two separate embryos (groups of cell)

10

Fracturnal Twins

Two separate eggs are produced and each are fetilized by different sperms

11

Sex-Linked Disorder

A genetic disorder that is found on the X chromosome

12

DNA

Molecule found in the nucleus of all living cells

13

Chargaff's Rule

Found that the amount of adenine always equals the amount of thymine

14

DNA Replication

The bases (A,T,C,G) split and new bases match up to the old ones

15

Mutations

Changes in the number, type , or order of bases on a piece of DNA

16

Delection

A base gets left out

17

Insertion

An extra base is added

18

Substitution

The wrong base is used( most common type)

19

Double Helix

Twisted ladder

20

Chromosomes

Several thread-like structures, consisting of chromatin that carry the genes, in a liner order

21

Homozygous

2 capital or lowercase letters (EE,ee)

22

Heterozygous

1 lowercase and 1 capital (Ee)