Basic Patterns of Inheritance - Introduction to Pedigrees

1. 1. The different variations of a trait is called a(n) ​ (a)   .

2. 2. A combination of a trait the individual received from mom and dad is called the ​ (b)   .

3. 3. The ​ (c)   is the observable trait.

• allele
• genotype
• phenotype
• dominant
• recessive

What will you learn in this video?

What are pedigrees used for?

• Determining patterns of inheritance

• Using knowledge of Punnett squares and probability to real-life scenarios

• Determining the likelihood a given trait or disorder can pass on to offspring or future generations

• Determining the phenotypes and genotypes of traits and genetic disorders

What can you use pedigrees for?

• Determining the pattern of inheritance

• Using knowledge of Punnett squares and probability to real-life scenarios

• Determining the likelihood a given trait can be passed on to future generations

• Determining phenotypes and genotypes of traits and genetic disorders

Label the pedigree.

a

b

c

d

e

f

youngest child

oldest child

4

parents

2

3

Where is individual II-3? Choose one answer.

Individual II-3 is ​ (a)   .

• male
• female

How many individuals express the trait?

Which individual is older?