Understanding Genes and Traits

What is a gene?

• A molecule that carries the instructions for life.

• A part of DNA that gives instructions for a trait.

• A package of DNA found in cells.

• Different versions of a gene.

What is DNA?

• A package of DNA found in cells.

• A weaker allele that only shows up if no dominant allele is present.

• The molecule that carries the instructions for life.

• The physical trait you can see.

What is a chromosome?

• A part of DNA that gives instructions for a trait.

• A package of DNA found in cells.

• Different versions of a gene.

• The genetic makeup or combination of alleles.

What is an allele?

• A stronger allele that shows up if present.

• A weaker allele that only shows up if no dominant allele is present.

• Different versions of a gene.

• The physical trait you can see.

What is a dominant allele?

• A weaker allele that only shows up if no dominant allele is present.

• A stronger allele that shows up if present.

• The genetic makeup or combination of alleles.

• A package of DNA found in cells.

What is a recessive allele?

• A stronger allele that shows up if present.

• A weaker allele that only shows up if no dominant allele is present.

• The physical trait you can see.

• A part of DNA that gives instructions for a trait.

What is a phenotype?

• The genetic makeup or combination of alleles.

• The physical trait you can see.

• A molecule that carries the instructions for life.

• A package of DNA found in cells.

What is a genotype?

• The physical trait you can see.

• The genetic makeup or combination of alleles.

• A part of DNA that gives instructions for a trait.

• Different versions of a gene.

Which of the following best describes a dominant allele?

• It is a part of DNA that gives instructions for a trait.

• It is a stronger allele that shows up if present.

• It is a weaker allele that only shows up if no dominant allele is present.

• It is a package of DNA found in cells.

Which of the following best describes a recessive allele?

• It is a stronger allele that shows up if present.

• It is a weaker allele that only shows up if no dominant allele is present.

• It is the physical trait you can see.

• It is the genetic makeup or combination of alleles.