Reproduction and Genetics
Genetics Notes Foldable
Heredity
The process
in which
characteristics
pass from
parents to
offspring.
Genetics
The scientific study of
heredity.
Traits
An organism’s physical
appearance
Such as type of nose or long
eyelashes
DNA
Deoxyribonucleic Acid
Chromosomes are made
partly of long-chain
molecules call DNA
Gene
 A segment of a
DNA molecule
that contains
information
that governs a
specific trait.
Sexual Reproduction
 Involves two
parents who
combine
genetic
material
 Each parent
provides part
of the genes
Asexual Reproduction
 Offspring are
produced by a
single parent
 An example is a
one-celled
organism, such
as bacterium,
dividing into two.
Alleles
 One part of a gene pair
 Example: free or attached ear
lobes
 http://faculty.mdc.edu/mmontane/images
/human-traits.jpg
Dominant and Recessive Alleles
 Dominant:
Always shows up
in an organism
 Cleft chin
 Curly hair
 Dark hair
 Purple pea
flowers
 Recessive : Hidden
when dominant is
present
 Straight hair
 Red hair
 Attached ear lobes
 White pea flowers