Semester Test Review #1 8th grade

Front

What is an inference?

Back

An inference is a conclusion drawn from evidence and reasoning, based on prior knowledge and observations.

Front

What is the probability of inheriting a recessive trait represented by the genotype bb?

Back

25%.

Front

What does a Punnett square show?

Back

A Punnett square shows all the possible combinations of alleles that can result from a genetic cross.

Front

In a heterozygous genotype like Bb, which allele is expressed?

Back

The dominant allele.

Front

What is an example of a qualitative observation?

Back

The clouds look grey and dark.

Front

What is a dominant allele?

Back

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

Front

What is a recessive allele?

Back

A recessive allele is an allele that only expresses its trait when two copies are present in a homozygous genotype.

Front

What is the difference between qualitative and quantitative observations?

Back

Qualitative observations describe characteristics or qualities, while quantitative observations involve measurements and numbers.

Front

What is the purpose of a Punnett square in genetics?

Back

The purpose of a Punnett square is to predict the genetic outcomes of a cross between two organisms.

Front

What does the term 'genotype' refer to?

Back

Genotype refers to the genetic makeup of an organism, specifically the alleles it carries.