Inheritance

5.2 Inheritance
 
Definition

Inheritance: The transmission of certain characteristics from the parents to the children.

Genes control certain characteristics in an organism.

 
Allele
Allele: a pair of genes at the same locus 
 

Allele

 

The characteristics are usually controlled by dominant allele and characteristic from recessive allele will be covered.

  • Dominant allele - represented by capital letter
  • Recessive allele - represented by small lette
Genotypes Example of alleles
Homozygous dominant TT (normal trait)
Homozygous recessive tt (very rare trait)
Heterozygous Tt (normal trait)
 
Schematic diagram of Mendel's Law
 

 

 
Schematic diagram of sex determination
 

 
  • The father determines the gender of the offspring because:
    • Sperm carries sex chromosome x and y while ovum only carries chromosome x

 

Inheritance

5.2 Inheritance
 
Definition

Inheritance: The transmission of certain characteristics from the parents to the children.

Genes control certain characteristics in an organism.

 
Allele
Allele: a pair of genes at the same locus 
 

Allele

 

The characteristics are usually controlled by dominant allele and characteristic from recessive allele will be covered.

  • Dominant allele - represented by capital letter
  • Recessive allele - represented by small lette
Genotypes Example of alleles
Homozygous dominant TT (normal trait)
Homozygous recessive tt (very rare trait)
Heterozygous Tt (normal trait)
 
Schematic diagram of Mendel's Law
 

 

 
Schematic diagram of sex determination
 

 
  • The father determines the gender of the offspring because:
    • Sperm carries sex chromosome x and y while ovum only carries chromosome x