Genotypes and Inheritance Patterns (HSC SSCE Biology): Quizzes

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Genotypes and Inheritance Patterns
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Who is known as the father of genetics?

Gregor Mendel

What are alleles?

Different versions of the same gene

What is the genotype?

Combination of alleles in an organism

An organism with genotype TtTt is described as:

Heterozygous

How are dominant alleles represented in genetic notation?

Capital letters

When two heterozygous tall plants (Tt×TtTt \times Tt) are crossed, what is the phenotypic ratio?

3:1 tall to short

What is the genotypic ratio from a Tt×TtTt \times Tt cross?

1:2:1

What is the purpose of a test cross?

To determine if organism is TTTT or TtTt

In a pedigree chart, what do shaded symbols represent?

Individuals expressing the trait

Which characteristic applies to autosomal recessive inheritance?

Often skips generations

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