Unit 7 Flashcard Review

Front

What is a Punnett Square?

Back

A Punnett Square is a diagram used to predict the genotypes of a particular cross or breeding experiment. It shows the possible combinations of alleles from the parents.

Front

What is the genotypic ratio when crossing two heterozygous plants (Tt x Tt)?

Back

1:2:1

Front

What does homozygous dominant mean?

Back

Homozygous dominant refers to an organism that has two identical dominant alleles for a trait, represented as 'AA'.

Front

What are the possible genotypes from crossing a homozygous dominant dog (BB) with a heterozygous dog (Bb)?

Back

50% BB and 50% Bb

Front

What is the definition of phenotype?

Back

Phenotype is the physical appearance or observable characteristics of an organism, determined by its genotype.

Front

What is the definition of genotype?

Back

Genotype is the genetic makeup of an organism, consisting of the alleles inherited from its parents.

Front

What is the FOIL method used for in genetics?

Back

The FOIL method is used to determine the allele combinations from a dihybrid cross by multiplying the first, outside, inside, and last terms.

Front

What is the result of the FOIL method for the genotype AaFF?

Back

AF, AF, aF, aF

Front

What is the difference between dominant and recessive alleles?

Back

Dominant alleles express their trait even when only one copy is present, while recessive alleles require two copies to express their trait.

Front

What does it mean if an organism is heterozygous?

Back

An organism is heterozygous if it has two different alleles for a particular gene, represented as 'Aa'.