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The CORRECT sequence of stages of mitosis is ________. |
prophase, metaphase, anaphase, telophase |
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The chromosomes of eukaryotic cells are found in the ________. |
nucleus |
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Sister chromatids are joined at the ________. |
centromere |
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The above figure shows that ________. |
meiosis results in the formation of four haploid daughter cells |
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A duplicated chromosome consists of two ________. |
sister chromatids |
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Which of the following occurs during prophase? |
The mitotic spindle begins to form |
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A karyotype (a chromosome display) would be unable to determine ________. |
eye color |
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Which of the following is a characteristic seen in prophase I that does NOT occur in prophase II? |
Crossing over occurs |
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The function of independent assortment is |
create genetic diversity in the offspring |
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What is said to be independent of each other in independent assortment? |
homologous chromosomes |
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Non-disjunction occurs |
when homologous chromosomes and sister chromatids fail to separate |
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Which of these could lead to the mistake evident in the karyotype? |
a nondisjunction in meiosis II in gamete formation |
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A cell that completed the cell cycle without undergoing cytokinesis would ________. |
have two nuclei |
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Which of the following is a stage of mitosis? |
telophase |
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During telophase, ________. |
the events of prophase are reversed |
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Ordinary cell division produces two daughter cells that are genetically identical. This type of cell division is important for all of the following functions EXCEPT ________. |
production of sperm and eggs |
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During metaphase, ________. |
chromosomes line up in the middle of the cell |
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God designed parthenogenesis for some of His creatures to |
preserves the creature in time of stress |
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Chromatin consists of ________. |
DNA and protein |
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A(n) ________ is an example of an organism that can sometimes reproduce asexually by parthenogenesis. |
Komodo dragon |
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Upon completion of telophase I and cytokinesis, there is(are) ________ cell(s). |
two diploid |
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What chromosomes belong to a normal human female? |
44 autosomes and 2 X chromosomes |
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This diagram of the human life cycle shows that ________. |
meiosis produces haploid sperm and egg cells |
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meiosis produces haploid sperm and egg cells |
homologous chromosomes |
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As shown in the following figure, plant cell cytokinesis differs from animal cell cytokinesis because ________. |
plant cells form a cell plate and animal cells do not |
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Which of these describes the type of reproduction that is most adaptive in a rapidly changing environment with many different parasitic diseases present? |
sexual reproduction because the diversity of genotypes increases the likelihood that there is one which can survive in a new environment |
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Sexual reproduction in humans ________. |
allows a haploid sperm cell to fertilize a haploid egg cell |
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Philosophically, what is the cause of these genetic abnormalities |
a consequence of sin in the world |
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The mitotic cell cycle results in the production of ________. |
two cells, each with the same amount of genetic material and the same genetic information |
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Genetic variation is accomplished by all but one of the following. Choose the exception. |
the events of meiosis II |
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Crossing over during prophase I results in ________. |
genetic recombination |
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Which of these events occurs during anaphase? |
Sister chromatids become separate chromosomes. |
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Centrosomes produce _________________ while spindle microtubules____________ |
spindle microtubules, guide the separation of the chromosomes |
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How much genetic material is present in a cell during prophase I compared to a cell that has completed meiosis II? |
four times as much |
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Haploid cells have________while diploid cells have ______ |
a single set of the genetic material, two set of the genetic material |
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The karyotype above shows ________. |
trisomy 21, a cause of Down syndrome |
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Chromosomes that do NOT determine the sex of an individual are called ________. |
autosomes |
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One difference between mitosis and meiosis is ________. |
mitosis produces cells genetically identical to the parent cell, but meiosis does not |
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In meiosis, how does prophase I differ from prophase II? |
During prophase I there is one diploid cell; during prophase II there are two haploid cells. |
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Which of the following is the best description of the events of anaphase I? |
Homologous chromosomes randomly separate and migrate to opposite poles. |
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Homologous chromosomes ________. |
carry genes controlling the same inherited characteristics |
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Which of the following occurs during interphase? |
Chromosome duplication occurs. |
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At the end of meiosis, |
there are 4 haploid cells |
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At anaphase I_______ is separated while at anaphase II _______is separated |
homologous chromosomes, sister chromatids |
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Which of the following will help prevent cancer and increase survival? |
Seek early detection of tumors. |
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