Science at a Distance

Mendelian Genetics

Lecture Notes - Part 2 Mendelian Genetics - Topic Outline

Quick Check

Read each of the "Quick Questions" below and write down your answer.
When you have finished the test, click on the "ANSWERS" button and see how well you have done.

Test Number MG-2025

Quick Questions

1) A Genetic cross is an experiment in which pea plants are made angry. (True / False)

2) Mendel allowed insects to fertilze his parental plants. (True / False)

3) A seed contains the zygote the results from fertilization. (True / False)

4) Mendel recorded exactly what he did, how many plants he used and the patterns of inheritance he saw. (True / False)

5) Differences in Phenotypes in Mendel's plants came about as a result of mutations. (True / False)

6) A typical Mendel genetic cross involves crossing two different plants each of which carries one gene that is different. (True / False)

7) If a plant that carries the genotype RR, it can produce two different sex gametes; R containing gametes and r containing gametes. (True / False)

8) All zygotes are haploid? (True / False)

9) Mendel only crossed one set of plants at a time and only collected the best seeds? (True / False)

10) Mendel only recorded the phenotype of his plants, never the genotype? (True / False)

11) Which genes end up in a zygote is a matter of chance? (True / False)

12) It is important to plant and count a lot of seeds, offspring and their phenotypes in experiments like these? (True / False)

13) Only seeds giving the right answer should be recorded? (True / False)

14) All seeds produce Red flowered plants in every cross? (True / False)

15) Mendel recorded the number of plants in each generation that showed the required trait. He then calculated the ratios of plants showing the trait to those not showing the trait. (True / False)

16) Ratios are an important mathematical technique that allows the experimenter to compare the results of several experiments. (True / False)

17) At the start of every genetic cross experiment, Mendel first made sure that his red flowered plants were "pure breeding". This meant that, in crosses with themselves, they only gave red flowered offspring for many generations. (True / False)

18) White flowered plants also are "pure breeding". (True / False)

19) In a cross of a pure breeding red flowered plant with a white flowered plant, half the seeds (the F1 generation) grow into red flowered plants and the other half of the seeds grow into white flowered plants. (True / False)

20) If a heterozygous plant (Rr) is crossed with another heterozygous plant (Rr) then all their seeds will grow into heterozygous plants? (True / False)

21) Mendel deduced from these results that all plants carry one gene (that he called an "elemente") for every phenotypic trait such as flower color. (True / False)

22) Joining two "elementes" of genes together takes place during meiosis? (True / False)

23) Mendel deduced from his results that all his red flowered plants had to have the genotype RR. (True / False)

24) Seeds only contain one gene for every trait. They are haploid. (True / False)

25) Mendel correctly deduced that heterozygous plants would never be "pure breeding". (True / False)

Answers to Part 2
Lecture Notes -
Part 1
Lecture Notes -
Part 2
Lecture Notes -
Part 3
Mendelian Genetics - Topic Outline
Science at a Distance
© 1997, Professor John Blamire