Wayground 10- Punnett Squares

What is the chance of a coin landing on heads?

• 100%

• 75%

• 50%

• 25%

Answer explanation

A fair coin has two sides: heads and tails. Therefore, the probability of landing on heads is 1 out of 2 possible outcomes, which is 50%.

What does a parent give to its offspring for each trait?

• No alleles

• Three alleles

• One allele

• Two alleles

Answer explanation

A parent gives one allele for each trait to its offspring. This is because offspring inherit one allele from each parent, resulting in two alleles per trait, but each parent contributes only one.

Tags

NGSS.HS-LS3-1

If a parent has one dominant and one recessive allele, what is the chance of passing on the dominant allele?

• 100%

• 75%

• 50%

• 25%

Answer explanation

A parent with one dominant and one recessive allele has a 50% chance of passing on the dominant allele. Each allele has an equal chance of being inherited, so the dominant allele can be passed on half the time.

Tags

NGSS.HS-LS3-3

What is a Punnett square used for?

• Predicting weather patterns

• Predicting possible offspring traits

• Calculating coin probabilities

• Determining plant growth rates

Answer explanation

A Punnett square is a tool used in genetics to predict the possible traits of offspring based on the genetic makeup of the parents. It helps visualize the combinations of alleles that can result from a genetic cross.

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Complete the punnett square

a

b

c

d

t t

T T

T t top row

T t bottom row

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Fill in the missing genotypes

a

b

Bb

bB

BB

bb

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Having a Widow's Peak is dominant (W) over not having one (w). If parent A (WW) and parent B (ww) have a child, what is the likelihood that--

• 0%

• The genotype of these children

• Ww

• The child will not have a widow's peak

• 100%

• The child will have a widow's peak

Tags

NGSS.HS-LS3-1

According to this Punnett square​ (a)   of the offspring will be homozygous dominant, ​ (b)   Of the offspring will be heterozygous, and the remaining 25% will be homozygous ​ (c)   . As for the phenotypes, ​ (d)   of the flowers will be ​ (e)   .

• 25%

• 50%

• recessive

• 75%

• pink

Answer explanation

In the Punnett square, 25% of the offspring will be homozygous dominant, 50% will be heterozygous, and 25% will be homozygous recessive. Therefore, 75% of the flowers will be pink, assuming pink is dominant.

Tags

NGSS.HS-LS3-1

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​ (a)   combination of alleles for a particular gene, shows the alleles or genes present in a person’s DNA. 

​ (b)   shows the physical appearance of the traits or characteristics.

• Genotype

• Phenotype

Answer explanation

The genotype refers to the combination of alleles for a particular gene present in an individual's DNA, while the phenotype describes the physical appearance or traits resulting from that genotype.

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Match the following

• Aa, AA, aa

• Phenotypes

• Aa

• Homozygous Recessive

• AA

• Heterozygous

• aa

• Homozygous Dominant

• tall, short

• Genotypes

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2