Heredity Unit Post-Assessment Review

Front

What are the different forms of a gene called?

Back

Alleles

Front

How can the environment alter traits?

Back

The environment can influence traits such as height.

Front

Which is NOT an example of a genotype?

Back

Y

Front

What is the probability of producing heterozygous offspring from a monohybrid cross?

Back

50%

Front

What are mutations?

Back

Changes in the sequence of DNA.

Front

What is a genotype?

Back

The genetic makeup of an organism, represented by letters (e.g., YY, Yy, yy).

Front

What is a phenotype?

Back

The observable characteristics or traits of an organism.

Front

What is the difference between dominant and recessive alleles?

Back

Dominant alleles express their trait even if only one copy is present, while recessive alleles require two copies to express their trait.

Front

What is a Punnett square used for?

Back

To predict the genetic outcomes of a cross between two organisms.

Front

What does homozygous mean?

Back

Having two identical alleles for a particular gene (e.g., YY or yy).