Heredity/Genetics Review 2024
Genetics
study of heredity discovered by Gregor Mendel
Heredity
the passing of traits from parents to offspring through sexual reproduction
Genes
found on the chromosomes in the DNA
How many chromosomes on a human body cell?
46
Gametes are also known as
sex cells
Sex cells include
eggs and sperm
Each sex cell contains how many chromosomes?
23
Chromosomes that determine sex are:
X and Y
Female sex chromosomes
XX
Male sex chromosomes
XY
Inherited traits
characteristics that are passed from parent to offspring
Acquired traits
characteristics or behavior not genetic or inherited
Punnett Squares
a diagram that is used to predict an outcome of a particular cross
Genotype
an organism's genetic makeup, or allele combinations.
AA or aa
homozygous genotype combinations
Aa
heterozygous genotype combination
Phenotype
an organism's physical appearance, or visible traits.
Allele
appear in pairs to determine genes passed
Dominant Trait
the trait observed in the first generation and is written as a capital letter
Recessive Trait
a trait that is apparent only when two recessive alleles for the same characteristic are
inherited
Homozyous
organisms that have two identical alleles for a particular trait
Genetics
study of heredity discovered by Gregor Mendel
Heredity
the passing of traits from parents to offspring through sexual reproduction
Genes
found on the chromosomes in the DNA
How many chromosomes on a human body cell?
46
Gametes are also known as
sex cells
Sex cells include
eggs and sperm
Each sex cell contains how many chromosomes?
23
Chromosomes that determine sex are:
X and Y
Female sex chromosomes
XX
Male sex chromosomes
XY
Inherited traits
characteristics that are passed from parent to offspring
Acquired traits
characteristics or behavior not genetic or inherited
Punnett Squares
a diagram that is used to predict an outcome of a particular cross
Genotype
an organism's genetic makeup, or allele combinations.
AA or aa
homozygous genotype combinations
Aa
heterozygous genotype combination
Phenotype
an organism's physical appearance, or visible traits.
Allele
appear in pairs to determine genes passed
Dominant Trait
the trait observed in the first generation and is written as a capital letter
Recessive Trait
a trait that is apparent only when two recessive alleles for the same characteristic are
inherited
Homozyous
organisms that have two identical alleles for a particular trait
