Genetics

Front

What is the genetic makeup of an organism called?

Back

Genotype

Front

What are the possible genotypes for a cross resulting in TT = 25%, Tt = 50%, tt = 25%?

Back

TT = 25%, Tt = 50%, tt = 25%.

Front

If a homozygous round seeded plant (RR) is crossed with a homozygous wrinkled seeded plant (rr), what percentage of the offspring will be homozygous recessive?

Back

0%.

Front

What alleles would produce yellow bodies if Y for yellow is dominant over y for blue?

Back

YY, Yy.

Front

What is a physical characteristic that can be passed from parent to offspring?

Back

Trait.

Front

What is the difference between genotype and phenotype?

Back

Genotype is the genetic makeup, while phenotype is the physical expression of traits.

Front

What does homozygous mean?

Back

Having two identical alleles for a particular gene.

Front

What does heterozygous mean?

Back

Having two different alleles for a particular gene.

Front

What is a dominant allele?

Back

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

Front

What is a recessive allele?

Back

An allele that only expresses its trait when two copies are present.