Genetics Practice

Multiple Choice

Which one is an inherited trait?

• curly hair

• freckles

• attached earlobes

• all of them

Multiple Choice

This is a picture of

• cellular backbone

• DNA

• Chromatin

• Nucleolus

Multiple Choice

DNA is located in the

• Nucleus of a cell

• Mitochondria of a Eukaryotic cell

• Vacuole of a Eukaryotic Cell

• Cell Wall of a Eukaryotic Cell

Match

Match the following base pairs.

• A

• G

• T

T

C

A

• T

• C

• A

Multiple Choice

DNA is inside of your cells.What part of the cell is DNA in?

• Nucleus

• Cell membrane

• Chromosomes

• Cytoplasm

Multiple Choice

Where do you get your DNA from?

• only your mom

• only your dad

• both your mom and your dad

Fill in the Blanks

How many pairs of chromosomes do humans have?

Fill in the Blanks

Chromosomes are really long strands of

Multiple Choice

What is the structure labeled 2 in the diagram?

• chromosome

• DNA

• gene

• nucleus

Multiple Choice

What is the structure of DNA?

• Single-Helix

• Double-Helix

• Triple-Helix

• X-Shaped

Labeling

Label the following terms: Cell, DNA, Chromosome, Nucleus, Gene

Drag labels to their correct position on the image

Chromosome

DNA

Nucleus

Gene

Cell

Multiple Choice

Letters B, b, BB, Bb, bb

• Homozygous

• Heterozygous

• Hybrid

• Alleles

Remember for a recessive trait to be expressed, both genes must be recessive.

All recessive traits would come from homozygous alleles.

Multiple Choice

A trait that covers up another trait, represented by capital letter--B

• Dominant

• Recessive

• Hybrid

• Allele

Multiple Choice

A trait that gets covered up, represented by a lower case letter--b

• Dominant

• Recessive

• Hybrid

• Allele

Multiple Choice

Both letters are the same--BB, bb

• Homozygous

• Heterozygous

• Homozygous Dominant

• Homozygous Recessive

Multiple Choice

Different alleles for a trait--Bb

• Homozygous Dominant

• Homozygous Recessive

• Heterozygous

• Recessive

Multiple Choice

Each one of the boxes on the Punnett Square represents what probability of an offsprings' genotype?

• 25%
• 1%
• 10%
• 0%

Multiple Choice

B = brown fur b = white fur

In the Punnett square, what is the probability for white fur?

• 0%

• 25%

• 50%

• 75%

Multiple Choice

In a certain species of plant, the color purple (P) is dominant to the color white (p).

According to the Punnett Square, what is the probability of an offspring being purple?

• 25%

• 0%

• 100%

• 50%

Multiple Choice

Brown eyes are dominant (B). Blue eyes are recessive (b). If 2 siblings' genotypes are (BB) and (Bb), will they have the same eye color (phenotype)?

• Yes, because they have the same genotype

• Yes, because the dominant trait is always expressed

• No, because they have different genotypes

• No, because the recessive trait has to be expressed

Multiple Choice

Which of these genotypes is homozygous recessive?

• AA

• Aa

• aa

Multiple Choice

Which of these genotypes is homozygous dominant?

• AA

• Aa

• aa

Multiple Select

Choose ALL examples of HOMOZYGOUS genotypes.

• TT

• hh

• Rr

• bb

• Hh

Symbols

• Circle = female
• Square = male
• Normal or without

trait = unshaded

• Trait = shaded

Symbols

• If an individual

has one
recessive allele
for a trait, the
person is a
carrier. This is
shown with a
half-shaded
square or circle.

Symbols

• Married couple or

couple producing
offspring =
horizontal line
connecting
midpoint of circle
and square

Symbols

• One offspring

• Multiple Offspring

How do you
differentiate between
a brother and sister
and a husband and
wife on a pedigree?

Labeling

Label the correct parts

Drag labels to their correct position on the image

Expressed Trait

Current Generation

Oldest Generation

Fill in the Blanks

How many offspring were produced by the first generation?

Fill in the Blanks

How many of generation II were married with children?

Fill in the Blanks

How many deaths occurred within the pedigree?

Drag and Drop

This trait appears to be a ​

Placeholder

trait.

Drag these tiles and drop them in the correct blank above

recessive

dominate

deadly

Fill in the Blanks

How many people have this trait?

Multiple Choice

Florida panthers can have straight tails (S) or curly tails (s). What is the probability that two heterozygous panthers (both Ss) will have offspring with curly tails?

 

 

• 25%

• 50%

• 75%

• 100%