Download Ch 6 Formative Test - Meiosis and Mendel

Name: ______________________
Class: _________________
Date: _________
ID: A
Ch 6 Formative Test - Meiosis and Mendel
Multiple Choice
Identify the choice that best completes the statement or answers the question.
____
1. A kidney cell is an example of which type of cell?
a. sex cell
b. germ cell
c. somatic cell
____
2. How many chromosomes are in a human gamete?
a. 44
b. 46
c. 23
____
3. Which of the following best describes the genetic material a person receives from his or her father?
a. 22 haploid cells and an X or Y chromosome
b. 22 autosomes and an X or Y chromosome
c. 22 pairs of homologous chromosomes and an X and Y chromosome
____
4. Which phrase best describes the process of meiosis?
a. produces haploid gametes
b. results in genetically identical cells
c. occurs in body cells
____
5. Which of the following statements is true of homologous chromosomes?
a. They contain the same genes.
b. They divide during meiosis II.
c. They are exact copies.
____
6. Which phrase best describes meiosis I?
a. division of homologous chromosomes
b. duplication of paired chromosomes
c. fusion of sister chromatids
____
7. What happens to sister chromatids in meiosis II?
a. They duplicate.
b. They do not take part.
c. They are divided.
____
8. When Mendel crossed plants that were purebred purple-flowered with plants that were purebred
white-flowered, the resulting offspring all had purple flowers. When allowed to self-pollinate, this F
generation gave rise to white-flowered plants as well as purple. As a result, Mendel determined that
individual traits are
a. merged with successive generations.
b. lost in the pollination process.
c. inherited as discrete units.
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Name: ______________________
____
ID: A
9. Mendel was able to identify predictable patterns of heredity. He succeeded mainly because he chose to
study traits that
a. were always dominant.
b. had only two forms.
c. could be diluted.
____ 10. Which phrase best describes the term genome?
a. the location of a specific set of genes
b. the genes that make up an organism
c. the genetic makeup of a chromosome
____ 11. Hair color and eye color are examples of a person's
a. phenotype.
b. genotype.
c. recessive traits.
____ 12. When an organism has two alleles at a particular locus that are different, the organism is called
a. heterozygous.
b. purebred.
c. dominant.
____ 13. If a
a.
b.
c.
pea plant were homozygous recessive for height, how would its alleles be represented?
TT
tt
tT
____ 14. What do the letters inside the grid of a Punnett square represent?
a. chromosomes of parents
b. testcrosses of offspring
c. genotypes of offspring
____ 15. What is the probability that the offspring of a cross between a homozygous recessive parent and a
heterozygous parent will be homozygous recessive?
a. 1/8
b. 1/2
c. 1/1
____ 16. The
a.
b.
c.
term for a cross that involves just one trait, such as pod shape, is called a
monohybrid cross.
dihybrid cross.
homozygous cross.
____ 17. What is the phenotypic ratio of a monohybrid cross between two heterozygous parents?
a. 3:1
b. 9:3:3:1
c. 1:2:1
____ 18. Which phrase best describes the process of crossing over?
a. Pairs of sister chromatids become linked.
b. Pairs of sister chromatids exchange segments.
c. Pairs of homologous chromosomes exchange segments.
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Name: ______________________
ID: A
____ 19. Suppose a gene that codes for flower color is linked with a gene that codes for leaf shape. Which
statement is true of this pair of genes?
a. They are close together on the same chromosome.
b. They cross over separately during recombination.
c. They have similar loci on homologous chromosomes.
____ 20. During what stage of meiosis does crossing over occur?
a. metaphase II of meiosis II
b. anaphase II of meiosis II
c. prophase I of meiosis I
____ 21. Which of the following is a result of the study of gene linkage?
a. The relative distances between genes can be calculated.
b. The specific characteristics of offspring can be predicted.
c. The precise genes in the human genome have been mapped.
____ 22. The
a.
b.
c.
genetic material of a cell is contained in its
nucleus.
mitochondria.
chloroplasts.
____ 23. Chromosomes determine all inherited traits because they are made up of
a. DNA.
b. ATP.
c. phospholipids.
____ 24. During mitosis, two chromatids together form
a. a duplicated chromosome.
b. a single daughter cell.
c. several spindle fibers.
____ 25. The
a.
b.
c.
function of a cell's nucleus is to
serve as the site of protein synthesis.
generate energy by using ATP.
protect and control access to DNA.
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Name: ______________________
ID: A
____ 26. What process is illustrated in Figure 6.2?
a.
b.
c.
genetic variation
asexual reproduction
chromatid pairing
____ 27. Offspring produced through asexual reproduction are genetically
a. distinct from each other.
b. influenced by many parents.
c. identical to a single parent.
____ 28. Two similar chromosomes that you inherit from your parents (one from your mother, one from your
father) are called
a. sex chromosomes.
b. homologous chromosomes.
c. homozygous alleles.
____ 29. Meiosis produces cells with how many chromosomes?
a. 22
b. 44
c. 23
____ 30. Which of the following cell types is diploid?
a. ovum
b. sex cell
c. somatic cell
____ 31. A distinguishing characteristic that can be inherited is a(n)
a. trait.
b. cross.
c. gene.
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Name: ______________________
ID: A
____ 32. Which pair of genes in Figure 6.2 would be most likely to be inherited together?
a.
b.
c.
A and C
A and D
A and B
____ 33. Which event takes place during anaphase II of meiosis II?
a. Spindle fibers disassemble.
b. Cytoplasm divides.
c. Sister chromatids separate.
Short Answer
Short Answer
34. Which diagram in Figure 6.3 shows the process of meiosis? How do you know?
______________________________________________________________
______________________________________________________________
35. Identify the process shown in diagram 1. Describe one way the process in diagram 1 is different from the
process in diagram 2.
___________________________________________________________________
__________________________________________________________________
36. Write the letter that corresponds to the part of Figure 6.3 that shows the division of sister chromatids.
__________
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Name: ______________________
ID: A
37. Write the letter that corresponds to the cells in the diagram that are haploid. How are these cells
different from the cells in part D of the diagram?
___________________________________________________________________
38. Describe the process shown in part G of the diagram. How does it contribute to genetic diversity in all
sexually reproducing organisms?
__________________________________________________________________
Use the exhibit to answer the questions that follow.
39. Figure 6.4 shows the results of a cross between a plant with a known genotype and a plant of unknown
genotype. What is the term for this type of cross?
___________________________________________
40. In this plant species, the allele for purple flowers is dominant and the allele for white flowers is recessive.
Write the genotype for the offspring that have white flowers.
________________________________________________
41. Write the genotype for the offspring that have purple flowers. ________________
42. Predict the genotype for the parent organism whose genotype is unknown. Write a sentence to support
your answer.
___________________________________________________
43. Suppose the genotype of the unknown plants were FF. How would this genotype affect the phenotypes
of the offspring?
_____________________________________________________________
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