Genetics Review - Biology

Front

What is the definition of genotype?

Back

Genotype refers to the genetic makeup of an organism, specifically the alleles it possesses for a particular trait.

Tags

NGSS.HS-LS3-1

Front

What is the definition of phenotype?

Back

Phenotype is the observable physical or biochemical characteristics of an organism, determined by both genetic makeup and environmental influences.

Front

What does homozygous mean?

Back

Homozygous refers to having two identical alleles for a particular gene (e.g., AA or aa).

Front

What does heterozygous mean?

Back

Heterozygous refers to having two different alleles for a particular gene (e.g., Aa).

Front

What is a Punnett square?

Back

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

Front

If a red flower (RR) is crossed with a white flower (rr), what will be the phenotype of the offspring?

Back

All offspring will be red flowers (Rr) due to complete dominance.

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Front

What is the expected phenotypic ratio of a monohybrid cross?

Back

The expected phenotypic ratio of a monohybrid cross is typically 3:1.

Front

What is the significance of blood type inheritance?

Back

Blood type inheritance demonstrates codominance and multiple alleles, where A and B are codominant and O is recessive.

Front

What are the possible blood types of children from a type O (oo) and type AB parent?

Back

The possible blood types are Type A (Ao) and Type B (Bo).

Tags

NGSS.HS-LS3-1

Front

What is the definition of dominant allele?

Back

A dominant allele is an allele that expresses its trait even when only one copy is present (e.g., A in Aa).