Punnett Square

Vocabulary

100

What is the term for physical traits?

phenotype

200

What is the term for the combination of alleles that parents pass to their offspring?

genotype

300

The term for having two identical alleles for a gene

homozygous

400

The term for a form of a trait

allele

500

The term for having two different alleles for a gene

heterozygous

Monohybrid Punnett Square Problems

100

Purple flowers (P) are dominant to white flowers. Write the genotype for a white flower.

If P = purple flowers and p = white flowers, then white flowers has a genotype of pp.

200

Tall stems (T) are dominant to short stems. Write the possible genotypes to represent tall stems

If you are using T for tall - TT or Tt

300

Round seeds are dominant to wrinkled seeds. If two heterozygous round seeded plants cross, what is the probability in fractions that they would have wrinkled seeded offspring?

25%

400

Having dimples is dominant to not having dimples. Create a punnet square of a parent that is homozygous dominant for dimples and a parent that is heterozygous for dimples. What is the probability in percent that they will have offspring that have no dimples?

0%

500

Yellow seeds (Y) are dominant to green seeds. Two yellow seeded plants cross to have green seeded offspring. What are the parents' genotypes?

If Y = yellow seeds and y = green seeds, then both parents will be heterozygous (Yy and Yy)

Monohybrid or Dihybrid Punnett Squares

100

Tall stems (T) are dominant to short stems. The offspring are all short stemmed. What are the genotypes of the parents?

If T = tall stem and t = short stem, then both parents are tt.

200

Long hair (L) is dominant to short hair in cats. Two cats mate and always produce long haired kittens. One parent has short hair. What is the genotype of the other parent?

L = long hair and l = short hair. If one parent has short hair (ll), then the other parent must be LL to always have kids that have long hair.

300

Purple flowers (P) are dominant to white flowers and tall stems (T) are dominant to short stems. What is the phenotype for Pptt?

purple flowers and short stem

400

Having brown eyes is dominant to having green eyes and having freckles is dominant to not having freckles. In fractions, how many offspring will have brown eyes but no freckles if the one parent is heterozygous for brown eyes but has no freckles and the other parent has green eyes and is heterozygous for freckles? You can set the timer to 4 minutes!

4/16

500

Having brown eyes is dominant to having green eyes and having dimples is dominant to not having dimples. In fractions, how many offspring will have green eyes and no dimples if the parents are both heterozygous for brown eyes and dimples. You can set the timer to 4 minutes!

1/16.

Dihybrid Punnett Squares Problems

100

Long eyelashes (L) are dominant to having short eyelashes and tongue rolling (T) is dominant to not being able to roll tongue. The wife is homozygous dominant for long lashes and heterozygous for tongue rollling. The husband has short lashes and is homozygous dominant for tongue rolling. Write the parents genotypes.

If L = long lashes and l = short lashes and T = tongue rolling and t = no tongue rolling then parent 1 is LLTt and parent 2 is llTT.

200

Tall stems (T) are dominant to short stems and round seeds (R) are dominant to wrinkled seeds. One parent is heterozygous for tall stems and has wrinkled seeds. What are the 4 sets of alleles that should be written for this parent when creating a punnett square?

If T = tall stems and t = short stems and R = round seeds and r = wrinkled seeds then the parent's genotype is Ttrr. The four sets of alleles are: Tr, tr, Tr, and tr.

300

In rabbits, grey fur (G) is dominant to white fur (g) and black eyes (B) are dominant to red eyes (b). One parent is GgBb and the other parent is ggBb. What is the probability in fractions that they will produce offspring that have grey fur and black eyes? You can set the timer to 4 minutes!

6/16

400

In tomatoes red fruit (R) is dominant to yellow fruit (r) and tall vines (T) are dominant to short vines (t). Both parents are heterozygous for red fruit and tall vines. What is the probability in fractions that the offspring will be RrTT? You can set the timer to 4 minutes!

2/16

500

In tomatoes, red fruit (R) is dominant to yellow fruit and long vines (L) are dominant short vines. If both parents are heterozygous for red fruit and long vines what is the probability in fractions that they would produce offspring that have red fruit and long vines? You can set the timer to 4 minutes!

9/16

Random

100

Enzymes are made of which macromolecule: A) Carbohydrates B) Proteins C) Lipids D) Nucleic Acids

B) Proteins

200

The pH of Windex is 10. What type of solution is this? A) Acidic B) Basic C) Neutral

B) Basic

300

Who is the founder of genetics?

Mendel

400

If I play music to plants everyday, then they will grow taller. What is the dependent variable of this hypothesis?

Height

500

Name a difference between mitosis and meiosis

Possible answers: mitosis produces 2 identical diploid cells and meiosis produces 4 different haploid cells. Mitosis divides somatic cells and meiosis divides gametes. Meiosis undergoes 2 divisions and mitosis goes through one division. Crossing over only occurs in meiosis, not mitosis.