Homozygous vs Heterozygous

Front

What does homozygous mean?

Back

Homozygous refers to having two identical alleles for a particular gene, such as AA or aa.

Front

What does heterozygous mean?

Back

Heterozygous refers to having two different alleles for a particular gene, such as Aa.

Front

Which genotype is an example of homozygous?

Back

AA or aa.

Front

Which genotype is an example of heterozygous?

Back

Aa.

Front

In the genotype Tt, what does 'T' represent?

Back

The dominant allele.

Front

In the genotype Tt, what does 't' represent?

Back

The recessive allele.

Front

If a plant has the genotype Rr, what can we say about its alleles?

Back

It has one dominant allele (R) and one recessive allele (r), making it heterozygous.

Front

If a person has the genotype BB, what can we say about their alleles?

Back

They are homozygous for the dominant allele.

Front

What is the result of crossing two homozygous parents, one dominant and one recessive?

Back

All offspring will be heterozygous.

Front

What is the result of crossing two heterozygous parents?

Back

The offspring can be homozygous dominant, homozygous recessive, or heterozygous (1:2:1 ratio).