92- Genetics Review

Front

What is a genotype?

Back

A genotype is the genetic makeup of an individual, consisting of the alleles inherited from both parents.

Front

What are the possible genotypes for type B blood?

Back

I^BI^B and I^Bi.

Front

What is the phenotype of a flower with genotype rr?

Back

The phenotype is white, as white (r) is recessive.

Front

What is a karyotype?

Back

A karyotype is a visual representation of an individual's chromosomes, used to identify chromosomal abnormalities.

Front

What disorder is indicated by an extra chromosome 21 in a karyotype?

Back

Down syndrome.

Front

What does it mean for an allele to be dominant?

Back

A dominant allele is one that expresses its trait even when only one copy is present in the genotype.

Front

What is the phenotype of a flower with genotype RR?

Back

The phenotype is red, as red (R) is dominant.

Front

How can a child inherit blood type O?

Back

A child must inherit the i allele from both parents (genotype ii).

Front

What is the significance of the Punnett square in genetics?

Back

A Punnett square is a tool used to predict the genotypes and phenotypes of offspring from parental crosses.

Front

What is the difference between homozygous and heterozygous genotypes?

Back

Homozygous genotypes have two identical alleles (e.g., AA or aa), while heterozygous genotypes have two different alleles (e.g., Aa).