A botanist crosses a pea plant that produces smooth seeds with a pea plant that produces wrinkled seeds. The resulting plants all produce smooth seeds. What can be determined from the results of the experiment? Circle the letter of the correct answer.

• Smooth shape and wrinkled shape are both recessive traits.

• Smooth shape and wrinkled shape are both dominant traits.

• Smooth shape is a dominant trait, and wrinkled shape is a recessive trait.

• Smooth shape is a recessive trait, and wrinkled shape is a dominant trait.

Tags

NGSS.HS-LS3-2

The diagram shows a cross that is similar to one of Mendel’s pea plant crosses. What is the dominant phenotype of the offspring in the cross shown? Circle the letter of the correct answer.

• Ff

• FF

• blue flowers

• white flowers

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Write the correct letter in each blank to correctly complete the paragraph. Most lions have tawny brown coats, but a few have very pale beige coats. The different coat colors result from genetic differences and so are ____________. A male and a female lion each have different ____________ for the coat color ____________ on their ____________.

• inherited traits

• alleles

• gene

• chromosomes

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Eye color is a gene that is passed down from father and mother to child. Brown eye color is a dominant trait, and blue eye color is a recessive trait. If a father has brown eyes (Bb) and a mother has blue eyes (bb), what is the probability that their child will have blue eyes? Write the correct letter in each box to correctly complete the Punnett square in your notebook and in the blank in the conclusion text under the Punnett square.

• 100%

• 25%

• 0%

• 50%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

A student observing a population of bacteria has determined that the generation time is 15 minutes. Starting with a single bacterium, graph the growth of the population over a period of 75 minutes. Use your pencil to graph the growth of the bacteria population every 15 minutes starting with 1 cell at time 0 and ending at 75 minutes.

Tags

NGSS.HS-LS2-2

A pair of fruit flies reproduces and has one thousand offspring. All one thousand of the offspring have the alleles Gg. Identify the most likely combination of alleles for each parent, and explain how you know. Write your answer on the lines.

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Explain how being able to reproduce both sexually and asexually might be an advantage to Daphnia.

Tags

NGSS.HS-LS3-2

NGSS.HS-LS4-2

Describe the conditions in which asexual reproduction might be advantageous to Daphnia.

The diagram shows a Punnett square made to predict the earlobe shape of the offspring of two parents.

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Identify the genotype of each offspring.

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2