8.3.1 Sexual Reproduction and the Role of Meiosis – Flashcards
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Yeast, a single-celled fungi, often replicates by pinching off into two unequal sized cells. This process is called
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budding.
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Bacteria most commonly reproduce by a method called
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Neither A nor B.
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True or false?
There are no known animal species that reproduce asexually.
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false
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__________ cells do not directly take part in sexual reproduction, while __________ cells do.
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Somatic; germ
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An animal cell with one set of chromosomes rather than two has a ______________ chromosome number.
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haploid
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In sexual reproduction
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gametes are usually haploid.
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Which statement regarding homologous chromosomes is not correct?
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Homologous chromosomes have identical alleles.
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True or false?
All diploid cells have homologous chromosomes.
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true
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True or false?
Homologous chromosomes are attached at the centromere.
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false
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Homologous chromosomes originate
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during fertilization.
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A diploid cell with 16 chromosomes
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has 8 chromosome pairs.
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Meiosis in animals serves all but which one of the following functions?
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the production genetically identical daughter cells
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The chiasma connects a pair of:
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homologous chromosomes during meiosis I.
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All of the following are functions of meiosis except:
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Production of identical daughter cells.
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True or false?
A synapsis is the X-like formation that represents an exchange of genetic material between chromatids on homologous chromosomes.
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false
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The centromere is the location where
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chromatids are attached to one another.
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Which of the following statements regarding homologous chromosomes is true?
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They have genes for the same traits.
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Crossing over can contribute to genetic variation by exchanging genetic material between
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nonsister chromatids of homologues.
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Homologous chromosomes separate and migrate to opposite poles during
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anaphase I.
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Which statement regarding meiosis is true?
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Homologous chromosomes separate during anaphase I.
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Which statement regarding disjunction is false?
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Disjunction occurs only during anaphase II of meiosis.
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If we count copies (c) of DNA, what do we start and end with in the process of meiosis?
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4c to 1c
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Sister chromatids of each chromosome separate and move to opposite poles during
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anaphase II.
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Homologous chromosomes move to opposite poles of a dividing cell during
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meiosis I.
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Which of the following cells are genetically identical?
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two cells resulting from mitosis
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Meiosis II is similar to mitosis because
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sister chromatids separate during anaphase.
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In humans, meiosis occurs during
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the development of sperm.
