Meiosis and Genetic Variation

The cells produced via meiosis are called:

• gametes

• somatic cells

• body cells

• skin cells

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Meiosis in male mammals results in the formation of

• two sperm cells with haploid number of chromosomes

• two sperm cells with diploid number of chromosomes

• four sperm cells with diploid number of chromosomes

• four sperm cells with haploid number of chromosomes

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If the regular number of chromosomes of Carrots is 18, the number of chromosomes found in a carrot's sex cells is....

• 18

• 9

• 27

• 36

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If a body cell in a butterfly contains 24 chromosomes, a butterfly egg would contain

• 3
• 6
• 12
• 24

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This image shows chromosomes during meiosis. Which of the following correctly describes the process shown?

• segregation of sister chromatids

• independent assortment of homologous chromosomes

• mutation in which the DNA content of the gene is altered

• crossing - over between homologous chromosomes

Why do we need meiosis?

• To double the number of chromosomes going into sex cells

• To produce sex cells with half the number of chromosomes

• To triple the number of chromosomes going into sex cells

• To not change the number of chromosomes going into sex cells

the end products of meiosis are genetically....

• unique

• identical

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Human eggs and sperm cells have _____ chromosomes while all other human cells have ______ chromosomes.

• 23; 46

• 46; 23

How are your chromosomes inherited?

• most of your chromosomes from your mother
• most of your chromosomes from your father
• a random number of chromosomes from each parent
• half your chromosomes from your mother and half from your father.

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What is one example of why it is helpful for a population to reproduce sexually versus asexually?

• all organisms will have similar traits

• overproduction in the population

• genetic variation in the population

• cloning in the population

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