Why is it difficult to observe individual chromosomes during interphase?
Which two phases of mitosis are essentially opposites in terms of changes in the nucleus?
A micrograph of a divid cell from a mouse shows 19 chromosomes, each consisting of two sister chromatids. During which stage of meiosis couldthis picture have been taken?
Although, nondisjunction is a random event, there are many more individuals with an extra chromosome 21, which causes Down syndrome, than individuals with an extra chromosome 2 or chromosome 16. Propose an explantion for this.
Which of the following is not a function of mitosis in humans?
Repair of wounds
Production of gametes from diploid cells
Replacement of lost or damaged cells
A biochemist measures the amount of DNA in cells growing in the laboratory. The quantity of DNA in a cell would be found to double
Between prophase and anaphase of mitosis
Between the G1 and G2 phases of the cell cycle
During the M phase of the cell cycle
Between prophase I and prophase II of meiosis
A chemical that disrupts microfilament formation would interfere with
Formation of the mitotic spindle
If an intenstinal cell in a dog contains____chromosomes, a dog sperm cell would contain ____ chromosomes.
Tumors that remain at their site of orgin are called_____ while tumors from which cells migrate to other body tissue are called_____.
A fruit fly somatic cell contains eight chromosomes. This means that ______ different combinations of chromosomes are possible in its gametes.
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Questions: 166 | Attempts: 13056 | Last updated: Jun 26, 2022