The function(s) of meiosis is/are _____.
  • Meiosis provides for asexual reproduction.
  • the centromeres of each chromosome come apart.
  • a. reproduction (production of gametes)
  • remain confined to their original site
In humans, the _____ determines the sex of the offspring because _____.
  • growth and developmenttissue repair/replacement of damaged cells
  • male ... the male can contribute either an X or a Y chromosome
  • Cell division is common in eukaryotes but rare in prokaryotes.
  • can produce great variation among the offspring
At ________, the mitotic spindle is fully formed and chromosomes are lined up in the center of the cell.
  • anaphase
  • benign tumor
  • metaphase
  • Metastasis
what maternal age does the incidence of Down syndrome begin to increase substantially?
  • Where is cat?
  • malignant tumor
  • asexual reproduction.
  • about 37 or 38
A cell replicates its entire chromosomal DNA only _____.
  • asexual reproduction only.
  • Benign tumors do not metastasize; malignant tumors do.
  • telophase...cytokinesis....
  • before it is about to divide
During _____, the cell carries out its normal functions and the chromosomes are thinly spread out throughout the nucleus.
  • benign tumor
  • prophase I
  • telophase...cytokinesis....
  • interphase
The creation of genetically identical offspring by a single parent, without the participation of sperm and egg, is called
  • asexual reproduction.
  • homologous chromosomes.
  • carcinoma
  • asexual reproduction only.
Which of the following statements regarding mitosis and meiosis is false?
  • Benign tumors do not metastasize; malignant tumors do.
  • DNA is synthesized in the S phase of interphase.
  • Meiosis provides for asexual reproduction.
  • Cell division is common in eukaryotes but rare in prokaryotes.
In _________, sister chromatids separate and become full-fledged chromosomes that move opposite poles.
  • interphase
  • anaphase
  • malignant tumor
  • Metastasis
Which of the following statements correctly describes the timing of DNA synthesis?
  • Prokaryotic chromosomes are more complex than those of eukaryotes.
  • DNA is synthesized in the S phase of interphase.
  • Where is cat?
  • Meiosis provides for asexual reproduction.
Benign tumors differ from malignant tumors in that the cells of a benign tumor _____.
  • DNA is synthesized in the S phase of interphase.
  • remain confined to their original site
  • possible combinations of characteristics.
  • Meiosis provides for asexual reproduction.
During binary fission, one copy of the duplicating chromosome moves to the opposite end of the cell. What does this achieve?
  • interphase
  • This brings the chromosomes into alignment so that crossing over can create new combinations of genes present on a single chromosome.
  • G1, S, G2, M
  • It ensures that each daughter cell receives one copy of the chromosome.
Prior to mitosis, each chromosome of a eukaryotic cell consists of a pair of identical structures called
  • interphase
  • Where is cat?
  • sister chromatids.
  • formation of a cell plate
Eukaryotic cells spend most of their cell cycle in which phase?
  • interphase
  • metaphase
  • prophase I
  • prophase
Which of the following statements regarding cell division is false?
  • Cell division is common in eukaryotes but rare in prokaryotes.
  • Prokaryotic chromosomes are more complex than those of eukaryotes.
  • DNA is synthesized in the S phase of interphase.
  • Where is cat?
A _____ _____ is a lump of abnormal cells that, although growing out of control, remains at its original site.
  • Metastasis
  • Benign tumors do not metastasize; malignant tumors do.
  • benign tumor
  • metaphase
A human bone marrow cell, in prophase of mitosis, contains 46 chromosomes. There are _____ chromatids.
  • 92
  • anaphase
  • The sequences are identical.
  • Where is cat?
Which of the following variations of the sentence "Where is the cat" is most like a chromosomal deletion?
  • Cell division is common in eukaryotes but rare in prokaryotes.
  • sister chromatids.
  • Where is cat?
  • formation of a cell plate
Immune system cells enter a resting phase after undergoing mitosis. When activated - for example, by an infection - they can reenter the sequence of events in the cell cycle that leads to cell division. What would be the correct sequence of events?
  • It ensures that each daughter cell receives one copy of the chromosome.
  • interphase
  • meiosis I
  • G1, S, G2, M
With the exception of identical twins, siblings who have the same two biological parents are likely to look similar, but not identical, to each other because they have
  • a similar but not identical combination of genes.
  • DNA is synthesized in the S phase of interphase.
  • Meiosis provides for asexual reproduction.
  • The sequences are identical.
During meiosis I, homologous chromosomes form a tetrad. What does this accomplish?
  • DNA is synthesized in the S phase of interphase.
  • This brings the chromosomes into alignment so that crossing over can create new combinations of genes present on a single chromosome.
  • three steps. All of the chromosomes are duplicated in a diploid cell, and then there are two cell divisions to produce a total of four haploid gametes.
  • are identical in the arrangement of their genes, but some versions of the genes may differ between the chromosomes
Within one chromosome, what is the relationship between the sequence of bases in DNA of one sister chromatid compared to the other?
  • telophase...cytokinesis....
  • a similar but not identical combination of genes.
  • The sequences are identical.
  • asexual reproduction.
The _____ separate in meiosis I; the _____ separate in meiosis II.
  • homologous chromosomes.
  • Meiosis provides for asexual reproduction.
  • can produce great variation among the offspring
  • homologous chromosomes ... sister chromatids
Which of the following statements regarding prokaryotes is false?
  • Meiosis provides for asexual reproduction.
  • Prokaryotic chromosomes are more complex than those of eukaryotes.
  • formation of a cell plate
  • DNA is synthesized in the S phase of interphase.
In _______ microtubules form the mitotic spindle, and the nuclear envelope breaks up.
  • Metastasis
  • prophase
  • interphase
  • anaphase
An individual with a malignant tumor is said to have ______.
  • cancer
  • carcinoma
  • prophase I
  • interphase
During which stage of meiosis do synapsis and crossing over occur?
  • anaphase
  • Metastasis
  • prophase I
  • metaphase
Two chromosomes in a nucleus that carry genes controlling the same inherited characteristics are
  • homologous chromosomes.
  • Meiosis provides for asexual reproduction.
  • formation of a cell plate
  • telophase...cytokinesis....
At the start of mitotic anaphase,
  • the centromeres of each chromosome come apart.
  • a. reproduction (production of gametes)
  • produces offspring genetically identical to the parent
  • division of the cell outside the nuclear material
When animal cells are grown in a petri dish, they typically stop dividing once they have formed a single, unbroken layer on the bottom of the dish. This arrest of division is an example ofWhen animal cells are grown in a petri dish, they typically stop dividing once they have formed a single, unbroken layer on the bottom of the dish. This arrest of division is an example of
  • asexual reproduction.
  • Meiosis provides for asexual reproduction.
  • The sequences are identical.
  • density-dependent inhibition.
Independent orientation of chromosomes at metaphase I results in an increase in the number of
  • growth and developmenttissue repair/replacement of damaged cells
  • sister chromatids.
  • remain confined to their original site
  • possible combinations of characteristics.
Baker's yeast is an organism with 32 chromosomes that can perform asexual or sexual reproduction and exist as both a diploid and haploid cell. After meiosis, how many chromosomes will be present in each cell?
  • telophase
  • 16
  • benign tumor
  • a similar but not identical combination of genes.
What is the difference between a benign tumor and a malignant tumor?
  • DNA is synthesized in the S phase of interphase.
  • Cell division is common in eukaryotes but rare in prokaryotes.
  • Meiosis provides for asexual reproduction.
  • Benign tumors do not metastasize; malignant tumors do.
Looking through a light microscope at a cell undergoing meiosis, you see that the chromosomes have joined into XX-shaped tetrads. These tetrads are lined up along a plane that runs through the center of the cell. This cell is in _____.
  • telophase
  • Where is cat?
  • meiosis I
  • prophase I
Asexual reproduction _____.
  • Benign tumors do not metastasize; malignant tumors do.
  • a. reproduction (production of gametes)
  • Prokaryotic chromosomes are more complex than those of eukaryotes.
  • produces offspring genetically identical to the parent
_______ is the spread of cancer cells from their site of origin to other sites in the body.
  • Metastasis
  • prophase
  • anaphase
  • metaphase
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