Understanding Mendelian Genetics

What foundational question did Mendel's experiments help answer?

• Why do children resemble their parents?

• Why do seasons change?

• Why do plants grow?

• Why do animals migrate?

Who developed the Punnett square method?

• James Watson

• Reginald Punnett

• Charles Darwin

• Gregor Mendel

What is the primary purpose of using a Punnett square?

• To calculate chemical reactions

• To measure plant growth

• To simplify genetic crosses

• To predict weather patterns

What is a dihybrid cross?

• A cross involving one character

• A cross involving two characters

• A cross involving three characters

• A cross involving four characters

In a dihybrid cross, what is the expected phenotypic ratio?

• 9:3:3:1

• 3:1

• 2:1

• 1:1

What are the genotypes of the plants used in the dihybrid cross example?

• TtPp and ttpp

• TTPP and ttpp

• TTPp and ttPP

• TtPP and ttPp

How many different phenotypic combinations are possible in a dihybrid cross?

• Two

• Five

• Four

• Three

What does the 9:3:3:1 ratio represent in a dihybrid cross?

• Probability ratio

• Phenotypic ratio

• Genotypic ratio

• Growth ratio

Does Mendel's dihybrid ratio always result in exactly 16 plants?

• Only with specific plants

• No, it's a calculated ratio

• Only in certain conditions

• Yes, always

What is the significance of the dihybrid ratio in genetics?

• It shows the distribution of traits

• It predicts plant height

• It measures seed size

• It determines flower color