Lesson 1: Introduction to Genetics

Question 1

Which statement describes the offspring of the F1 generation when crossing a pea plant that is true breeding for green seeds with a pea plant that is true breeding for yellow seeds?

Revolt · Accepted Answer

The offspring will inherit one allele from each parent.

Question 2

What controls traits and inheritance?

Revolt · Accepted Answer

nucleic acids

Question 3

During an experiment, a scientist crosses a pea plant that has purple flowers with a pea plant that has white flowers. The plants that result from this cross in the F1 generation have both purple and white flowers. What can the scientist conclude?

Revolt · Accepted Answer

The plants in the P generation were not true-breeding.

Question 4

Which statement describes Mendel’s hypotheses regarding gametes?

Revolt · Accepted Answer

A gamete carries one allele for a gene.

Question 5

The table below summarizes Mendel’s results for the F2 generation.Mendel’s ResultsPlant height787 tall277 shortFlower color705 purple224 whitePod color428 green152 yellowPod shape882 inflated299 constrictedSeed color6,022 yellowx greenSeed shape5,474 smooth1,850 wrinkledWhat number should replace the letter x in the “Seed color” row?

Revolt · Accepted Answer

2,001

Question 6

Why did Gregor Mendel use peas in his experiments?

Revolt · Accepted Answer

Peas have characteristics that have two forms.

Question 7

Scientists often use fruit flies as a method to test hypotheses about human genes. Why are fruit flies advantageous in the study of human inheritance?

Revolt · Accepted Answer

They reproduce quickly and take up little space.

Question 8

The table below summarizes the traits that Mendel examined during his experiments.Traits Studied by MendelWhat do these characteristics all have in common?

Revolt · Accepted Answer

They can all be easily observed.

Lesson 1: Introduction to Genetics Answers

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