Biology Study Guide 10.2

is the branch of biology that studies how traits are inherited.
Genetics

offspring result from parents that have different forms of alleles.
Hybrid

for certain traits.
Alleles

states that every individual has two alleles when gametes are produced, each gamete receives one of these alleles.
Law of Segregation

states that genes for different traits are inherited independently of each other.
Law of Independent Assortment

Dominant Trait
An observed trait that makes the recessive form of a trait.

Recessive Trait
Trait that can be observed if the dominant trait is not present.

Genotype
The allele combination an organism contains.

Phenotype
The way an organism looks and behaves.

Homozygous
An organism’s genotype when two alleles for a trait are the same.

Heterozyous
An organism’s genotype when two alleles for a trait are different.

pairs, with pea plants.
gene

A cross between plants that involves one characteristics is called a
Monohybrid

crosses.
Dihybrid

Among the seeds of the offspring
Phenotypic Ratio

Both males and females sex cells
gametes

from generation to generation.
Inherited

to breed one plant with another.
Cross – Pollination

occurs when a male gamete fuses with a female in the same flower.
Self – Fertilization