Biology, 10.12.2020 02:40 decoreyjpaipxv
In a growing plant root, the cells at the tip of the root are constantly dividing to allow the root to grow. Because each cell divides independently of the others, a root tip contains cells at different phases of the cell cycle. A scientist wants to determine the average percentage of time that each cell spends in the various phases of the cell cycle based on a 24-hour cycle time. He looks at a section of the onion root and counts the number of cells in each phase of the cell cycle. The table below shows the data he recorded during his observations.
Which of the following inferences can be drawn based on the data in the table?
A) There are more cells undergoing cytokinesis than telophase because cells need more time to divide the cytoplasm.
B) Cells spend most of their time in mitosis because cells need time to divide and make copies of the genetic information.
C) Cells spend most of their time in interphase because cells need time to grow, copy their DNA, and prepare for division.
D) There are more cells undergoing prophase than telophase because cells need more time to break down the nuclear envelope and condense the genetic information.
Answers: 1
Biology, 22.06.2019 01:00
Plz genetic engineering can be applied to many fields including medicine and agriculture. which of the following is a medical application of genetic engineering? a. giving crop plants recombinant dna so that they would be resistant to herbicides. b. examining a persons pedigree to determine whether they can carry a gene for a genetic disease. c. analyzing a persons dna to see how closely they are related to another person. d. certain genes into bacteria so that they will produce a needed medicine.
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Biology, 22.06.2019 15:30
Which term specifically refers to an area of the body between a medial and lateral structure
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Biology, 22.06.2019 15:50
The structure of a dna molecule is best described as a. one long strand of nucleic acids b. two strands of dna nucleotides joined by hydrogen bonds c. two strands of amino acids joined by hydrogen bonds d. one long strand of amino acids
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In a growing plant root, the cells at the tip of the root are constantly dividing to allow the root...
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