Intro to Genetics

Multiple Choice

A gene is

• a section of DNA

• a chemical found in the nucleus of cells

• contains instructions for building a protein

• all of the above

Multiple Choice

Complex molecule that carries genetic information that defines an organism's traits. It is stored in the nucleus.

• DNA
• protein
• RNA
• glucose nucleic acid (GNA)

Multiple Choice

What is the study of genes and inheritance known as?

• Genetics

• Chemistry

• Physics

• Astronomy

Multiple Choice

Which statement best supports why many offspring look similar to their parents?

• Offspring inherit traits from only one parent.

• Offspring inherit traits from both parents.

• Parents choose which traits to pass on to their offspring.

Multiple Choice

You inherit half of your DNA from your mother and half from _______?

• Your father

• Your pet hamster

• Your grandmother

• Your sister

Multiple Choice

What is a phenotype?

• The expression of a trait; what you see.
• refers to the genetic makeup of an individual
• An organism that has the same genes for a trait (ex. TT or tt)
• the passing of traits from parent to offspring

Multiple Choice

The inherited combination of alleles is known as the offspring's

• heredity
• phenotype
• genotype
• redigree

Multiple Choice

An organism's appearance is known as its

• heredity
• phenotype
• genotype
• pedigree

Multiple Choice

Which of the following features is NOT inherited?

• Skin color

• Tatoo

• Hair texture

• Color blindness

Multiple Choice

An organism's observable physical features are also called what?

• Genotype

• Phenotype

Multiple Choice

An organism's genetic code is also called what?

• Genotype

• Phenotype

Multiple Select

Check any/all phenotypes described below

• Tall

• Green eyes

• Hh

• Spotted fur

• bb

Multiple Select

Check any/all genotypes described below

• Rr

• Striped shell

• Curved beak

• TT

• Curly hair

Multiple Choice

An allele whose trait only shows up when no dominant allele is present.

• hidden allele
• dominant allele
• recessive allele
• present allele

Multiple Choice

You inherit a recessive allele from your mother and a dominant allele from your father. Which allele will be expressed?

• The recessive allele

• The dominant allele

Multiple Choice

having two of the same genes for the trait (sometimes called purebred).

• homozygous
• hetrozygous
• protein
• chromosome

Multiple Choice

having two different genes for a trait (sometimes called hybrid).

• protein
• homozygous
• heterozygous
• genotype

Multiple Choice

What does heterozygous mean?

• An organism that has the same genes for a trait (TT or tt)
• An organism that has different genes for a trait (Tt)
• When neither gene is fully dominant; offspring is a mixture of both
• the different forms of a trait (hair color--> brown, blonde, red

Multiple Choice

A corn plant heterozygous for tall sprouts mates with a corn plant with short sprouts. If tall sprouts are dominant, how many different phenotypes are possible in the offspring?

• 1
• 2
• 3
• 4