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Eukaryotic chromosomes are thousands of times longer than a typical cell. Explain how chromosomes can fit inside a eukaryotic nucleus.
A diploid cell has _____ the number of chromosomes as a haploid cell.
What is a gamete?
Which organism contains a genome composed of a single double stranded DNA molecule in a loop or circular form?
Identical copies of chromatin held together by cohesin at the centromere are called ______.
What is the the sequence of mitotic cell cycle for one pair of chromosome that is undergoing normal mitotic division?
In which phase of the cell cycle is DNA replicated?
A nondisjunction occurs when sister chromatids fail to separate during mitosis. At what stage of mitosis would you expect a nondisjunction to occur?
What is NOT a reason a cell would enter the G0 phase?
Which of the following statements about mitosis are correct? Select all that apply.
Methotrexate is a cancer drug, which blocks DNA synthesis. In a cell culture experiment, the cell cycle is synchronized so that all of the cells in the culture are in the same stage of the cell cycle. Methotrexate is then added when the cells are in the G2 phase and cells in the culture are permitted to go through one round of the cell cycle before measurements are made. What will be seen when the number of cells in the cell culture is measured?
The mitotic spindles arise from which cell structure?
Sexual reproduction results in offspring that are _______; whereas asexual reproduction results in offspring that are ______.
Match each type of organism to its observed lifecycle.
In the diagram shown, the haploid structures are ______, and the diploid structures are _______.
In sexually reproducing lifecycles, the diploid stage moves to the haploid stage via _____, and the haploid stage moves to the diploid stage via ________.
Germ cells are capable of undergoing:
How many and what type of daughter cells does meiosis produce from one parent cell?
What part of meiosis is most similar to mitosis?
During meiosis, homologous chromosomes are separated in _____, and sister chromatids are separated in _______.
Which of the following is NOT a source of genetic variation in sexually reproducing lifecycles?
What is one reason why it is necessary that meiosis occurs in sexually reproducing organisms?
To form four distinct daughter cells during the process of meiosis, cytokinesis must occur:
Which of the following is NOT a difference between mitosis and meiosis?