TEST Genetics & DNA (Honors)

Who was the "father of genetics"?

• Charles Darwin

• Issac Newton

• Gregor Mendel

• Albert Einstein

Select all of the following statements that are true about physical or visible traits?

• They are called genotypes

• They depend on the combination of dominant and recessive alleles received.

• They are called phenotypes

• They are controlled by recessive alleles only.

Mendel proved that: Every trait is controlled by ​ (a)   genes, one from each​ (b)   . Traits can be either dominant or recessive. ​ (c)   traits always mask ​ (d)   traits. ​ ​ (e)   traits can only show up when the organism is purebred.​ ​ ​ ​ ​ ​ ​ ****Pay attention to capitalization!

• Two
• parent
• Dominant
• recessive
• Recessive

If B=brown and b=blue, list the phenotypes for the following genotypes:

• blue

• Bb

• Brown

• bb

• Brown

• BB

Match the following terms with the correct description or definition.

• Phenotype

• An organisms physical appearance, or visible traits.

• Heredity

• An organism's genetic makeup, or allele combinations (letters).

• Genotype

• A segment of DNA on a chromosome that codes for a specific trait.

• Alleles

• Passing of traits from parents to offspring

• Gene

• The different variations or forms of a gene.

Match the following terms or concepts with the correct definition or description.

• Heterozygous

• An organism that has 1 dominant and 1 recessive allele for a gene

• Punnett Square

• The Scientific Study of Heredity

• Genetics

• Threadlike structures that contain DNA found in the Nucleus of the Cell

• Chromosomes

• A chart the shows the possible alleles combinations from a Genetic Cross

• Homozygous

• An organism that has 2 of the SAME alleles for a gene

Visible traits depend on the dominant and recessive forms of genes you get from each parent.

• TRUE

• FALSE

Recessive forms of genes are always visible in the offspring.

• TRUE

• FALSE

Visible traits are the same for each member of a family.

• TRUE

• FALSE

An individual must inherit a recessive allele from BOTH parents in order to

express a recessive trait

• TRUE

• FALSE