GRADE 8 - GENETICS

What does the word “inherit” mean?

• The passage of the hereditary material DNA to offspring.

• To pass a characteristic through the transmission of hereditary material, known as DNA.

• To receive a characteristic through the transfusion of hereditary material, known as DNA.

• To receive a characteristic through the trans fission of hereditary material, known as DNA.

What does it meant to be dominant?

• The effects of the one factor are unnoticed.

• Only the effects of the one factor are noticeable.

• The effects of both factors are masked.

• Both factors are present

A plant with a flower position (aa) is crossed with a heterozygous plant. What percentage of their offspring have (aa) flower genotype?

• 25%

• 50%

• 75%

• 100%

If you cross a plant with a flower position (aa) with a heterozygous plant (Aa).

What are the phenotypes of the offspring?

• Aa and aa

• AA and aa

• aa only

• AA only

How would you differentiate among genotype and phenotype is?

• Genotype are the genetic makeup while phenotype are physical traits.

• Genotype are physical traits while phenotype are the genetic traits.

• Genotype are physical character traits.

• Phenotype are the genetic traits.

Describe someone who is a heterozygous for a trait?

• Two of the same alleles for a particular trait.

• Two different alleles for a particular trait.

• One of the same alleles for a particular trait

• One different allele for a particular trait.

Organisms that are purebred, also called ____________.

• Homozygous

• Heterozygous

• Dominant

• Recessive heterozygous

He is known as Father of Modern Genetics.

• Albert Einstein

• Gregor Johann Mendel

• Charles Darwin

• John Dalton

It is used to solve genetic problems. It is a table in which all of the possible outcomes for a genetic cross between two individuals with known genotypes are given.

• Diagramming

• Test Cross

• Punnett Square

• Probability

The visible form of trait is called the ____________.

• recessive trait

• dominant trait

• pure breed

• hybrid