2nd Semester Vocab Flashcards Preview

Biology > 2nd Semester Vocab > Flashcards

Flashcards in 2nd Semester Vocab Deck (17):
1

Allele

One of a number of different forms of a gene(p. 1043)

2

Codominance

Situation in which both alleles of a gene contribute to the phenotype of the organism (p. 272)

3

Gene

A piece of DNA which codes for a trait.

4

Trait

A characteristic of an individual.

5

Genotype

Genetic makeup of organism

6

Phenotype

Physical characteristics of an organism

7

Hybrid

Offspring of crosses between parents with different traits.

8

Polygenic

Several genes per trait

9

Homozygous Dominant and recessive

Term used to refer to an organism that has two identical alleles for a particular trait

10

Heterozygous

Term used to refer to an organism that has two different alleles from the same trait

11

Complete Dominace

A form of dominance wherein the dominant allele completely marks the effect of the recessive allele in heterozygous condition.

12

Incomplete Dominance

A form of dominance occurring in heterozygous in which the dominant allele is only partially expressed, and usually resulting in an offspring with an intermediate phenotype

13

Purebred

(Of an animal) bred from parents of the same breed or variety

14

Law of segregation

Homologous cromosomas must go to different gametes

15

Low of independent assortment

Chromosomes will randomly be distributed to gametes

16

Homologous chromosomes

Code for the same genes but may have different alleles. One from your mom and one from dad.

17

Gametes

Sex cells (sperms, egg, pollon)