Chapter 13 – Genetics
Chapter 13
Genetics
Multiple Choice Questions
1. James Watson and Francis Crick started the field of _____________ with their 1953
discovery of the structure of DNA.
2. _____________ work with transposons was recognized when s/he received a Nobel Prize
in 1983.
Chapter 13 – Genetics
3. Which statement about transposons is INCORRECT?
4. Which statement correctly describes the arrangement of the nitrogenous bases in the double
helix of DNA?
Chapter 13 – Genetics
5. A sequence of nucleotides in a chromosome that controls the production of a protein is a
6. Which of the following describes the function of DNA in a cell?
7. The sum total of DNA in an organism’s chromosomes constitutes the ____________.
Chapter 13 – Genetics
8. The process of producing an accurate DNA copy of the genome is referred to as
_____________.
9. If the nucleotide sequence of DNA is T C C G A A, then the corresponding on mRNA is
10. Messenger RNA is a ______- stranded molecule.
Chapter 13 – Genetics
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11. Which is a part of DNA but not RNA?
12. An anticodon is found on a molecule of
13. If all cells of a plant have identical DNA, then why are there different cell types and
tissues within a plant?
Chapter 13 – Genetics
14. _____________ and ______________ are molecular processes that convert genetic
information into functional proteins.
15. The Central Dogma of Molecular Genetics is summarized in the following statement:
_____________________.
Chapter 13 – Genetics
16. Alternate forms of the same trait (yellow seeds or green seeds) are called
17. Agents such as ultraviolet light and certain chemicals called ___________ can alter DNA
sequences and permanently change the genome.
Chapter 13 – Genetics
18. ______________ is the study of chromosome behavior and structure at the cellular level.
19. Changes in chromosome number and structure that ____________________ are important
in the origin of new species (speciation).
Chapter 13 – Genetics
20. Haploid and diploid chromosome sets are common in both plants and animals, but plants
frequently have additional sets of chromosomes – a condition called _____________.
21. If a pure breeding parent producing yellow seeds, the dominant phenotype, is crossed with
a pure breeding parent producing green seeds, the recessive phenotype, the F1 generation will
produce
Chapter 13 – Genetics
22. Which is a heterozygous genotype for a given trait?
23. A single pair of genes controls red versus blue flower color in larkspurs, and red is
dominant phenotype. Which of the following phenotypes should occur in the F3 generation if
the parental generation was pure breeding strains for red and blue phenotypes?
Chapter 13 – Genetics
24. If red is dominant and yellow is recessive as a flower color in a certain species of plants,
and if, in the same plants, long hairs are dominant and absence of hair is recessive, and a
dihybrid cross involving homozygous parents is made, which of the following phenotypes
would NOT appear in the F2 generation?
25. Assume the same cross as in question 24. If the F2 generation involves thousands of
individual plants that are carefully counted, and four different phenotypes in a ratio other than
9:3:3:1 are noted, which of the following would be suspected?