How do you determine genotype and phenotype in a pedigree?
- Determine if the trait of interest is dominant or recessive.
- If the trait of interest is dominant, then individuals on the pedigree that have trait will have their shapes shaded. …
- The genotype of recessive individuals will be represented by to lower case alleles.
How do you determine the genotype?
genotype = the genes of an organism; for one specific trait we use two letters to represent the genotype. A capital letter represents the dominant form of a gene (allele), and a lowercase letter is the abbreviation for the recessive form of the gene (allele).
What is phenotype example?
The term “phenotype” refers to the observable physical properties of an organism; these include the organism’s appearance, development, and behavior. … Examples of phenotypes include height, wing length, and hair color.
What symbols are used in a pedigree chart?
Pedigrees are drawn using standard symbols and formatting. Males are represented by squares and females by circles. Individuals who are deceased have a slash through the symbol representing them. Symbols for individuals affected by a particular disorder are shaded.
What is it called when genes are passed down?
But when people talk about genes being passed on, they generally don’t mean genes being passed on from cell to cell during cell division. Instead, they usually mean genes being passed on from parents to children. This is known as “heredity” or “inherited genes.”