Applied Genetics Review

Front

What type of 'square' helps us solve genetic problems?

Back

Punnett square: A diagram used to predict the outcome of a genetic cross by showing the possible combinations of alleles from the parents.

Front

An allele whose trait only shows up when no dominant allele is present.

Back

Recessive allele: An allele that is masked by the presence of a dominant allele and only expresses its trait when two copies are present.

Front

The Great White Shark was 20 feet in length. Phenotype or Genotype?

Back

Phenotype: The observable physical characteristics of an organism, such as size, color, and shape.

Front

Dominant alleles are-

Back

Capital: Dominant alleles are represented by capital letters in genetic notation.

Front

Tt is-

Back

Heterozygous: An organism with two different alleles for a trait, one dominant and one recessive.

Front

What is a genotype?

Back

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

Front

What is a phenotype?

Back

Phenotype: The physical expression or characteristics of a trait in an organism.

Front

What does homozygous mean?

Back

Homozygous: An organism that has two identical alleles for a particular trait.

Front

What does heterozygous mean?

Back

Heterozygous: An organism that has two different alleles for a particular trait.

Front

What is a dominant allele?

Back

Dominant allele: An allele that expresses its trait even in the presence of a recessive allele.