11/19: Introduction to Genetics (BC)

Multiple Choice

Which scientist is known as the father of genetics for his experiments with pea plants?

• Charles Darwin

• Gregor Mendel

• Louis Pasteur

• James Watson

Multiple Choice

Who is known as the 'Father of Genetics' and what organism did he study to discover how traits are inherited?

• Charles Darwin; finches

• Gregor Mendel; garden peas

• James Watson; fruit flies

• Rosalind Franklin; mice

Multiple Select

Which of the following are considered traits that Mendel observed in pea plants?

• Seed shape

• Leaf size

• Pod color

• Flower position

Open Ended

List and briefly describe three traits of pea plants that Mendel studied in his experiments.

Open Ended

All F1 offspring in Mendel's experiment were purple. What happened to the white color?

Multiple Choice

According to Mendel's principle of dominance, which trait will be expressed in the F1 generation if a plant with purple flowers (dominant) is crossed with a plant with white flowers (recessive)?

• Both purple and white flowers will be expressed equally

• Only white flowers will be expressed

• Only purple flowers will be expressed

• Neither flower color will be expressed

Open Ended

Why did the white trait disappear in the first generation and then reappear in the second generation?

Multiple Choice

Which principle explains how alleles separate during the formation of gametes?

• Principle of Dominance

• Principle of Segregation

• Principle of Independent Assortment

• Principle of Recessiveness

Multiple Select

Which of the following genotype and phenotype pairs is correct for a purple flower?

• PP - white

• Pp - purple

• pp - purple

• pp - white

Multiple Choice

Using the Punnett square, what is the probability that an offspring will have white flowers?

• 0%

• 25%

• 50%

• 75%

Multiple Choice

Which genotype represents a heterozygous guinea pig for hair length?

• HH

• Hh

• hh

• hH

Multiple Choice

Which genotype represents a plant with a round seed, given that round is dominant to wrinkled?

• RR

• Rr

• rr

• Rr or RR

Multiple Choice

Based on the cross RR x rr shown in the Punnett square, how many out of 4 offspring are round and how many are wrinkled?

• 4 round, 0 wrinkled

• 2 round, 2 wrinkled

• 3 round, 1 wrinkled

• 0 round, 4 wrinkled

Open Ended

A round plant (Rr) is crossed with a wrinkled plant (rr). Set up the Punnett square and determine the phenotypic ratios. How many offspring are round? How many are wrinkled?

Multiple Choice

If a heterozygous tall pea plant is crossed with a short pea plant, what proportion of the offspring will be tall?

• 1/2

• 1/4

• 3/4

• all

Multiple Choice

Which of the following crosses is an example of a dihybrid cross?

• Pp x Pp

• Aa x Aa

• AaBb x AaBb

• BB x Bb

Open Ended

What is one question you still have about genetics after this lesson?

Open Ended

Why is it important to understand how traits are inherited?

Multiple Select

Which of the following traits are shown in the diagrams for peas and fruit flies?

• Inflated pea pod and vestigial wings

• Constricted pea pod and normal wings

• Yellow pea pod and vestigial wings

• Green pea pod and normal wings