Biology-Chapter 10

When gametes meet it is called:

• meiosis
• fertilization
• cell division
• mitosis

The result of meiosis is:

• two diploid cells
• two haploid cells
• four diploid cells 
• four haploid cells

When a section of a chromatid is exchanged with its homologous chromosome:

• crossing over occurs
• mutagenesis occurs
• hydridization occurs
• fertilization occurs

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One of the main reasons for meiosis is to:

• encourage growth in an organism
• help with repair to damaged cells in an organism
• provide genetic variation in a species
• inhibit contact between organisms from different species

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If T=tall and t=short, how many of the offspring are tall?

• 0
• 1
• 2
• 4

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NGSS.HS-LS3-1

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Different forms of a gene for the same trait are called:

• hybrids
• dominate factors
• alleles
• recessive factors

The physical characteristics of an organism are called its:

• genetics
• heredity
• phenotype
• genotype

The passing of traits from parents to offspring are called:

• genetics
• heredity
• inbreeding
• gene splicing

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What causes genetic varation in meiosis?

• chromosomes lining up
• crossing over of chromosomes
• separation of chromosomes
• chromosomes pulling apart

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A couple has two children, both of whom are boys.  What is the chance that the parent's next child will be a boy?

• 0%
• 50%
• 75%
• 100%

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