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What is life? A guide to Biology Chapter 6 Vocabulary
Chapter 6 Vocabulary from What is Life? A Guide to Biology (Second Edition) Used in BIOL 100 at the University of Kansas
Terms in this set (47)
A section of non-coding, repetitive DNA that serves as a protective cap and is located at the tip of every chromosome.
A long linear strand that keeps DNA from getting tangled. These enable it to be tightly packed within a cell.
"Division in two"
The method in which a cell creates an exact replica of each chromosome. The beginning process of binary fission.
The original cell which pinches and divides into two daughter cells.
The two new cells formed from a parent cell dividing itself.
The alteration of processes between processes related to growth and process related to cell division.
Cells making up the body of an organism.
The sex cells of an organism.
Another name for reproductive cells, being the sperm and egg.
1 of 2 main phases in the cell cycle. The phase where the cell grows and prepares to divide.
(M Phase) First the nucleus and genetic material within a cell divides, and then the rest of the cellular contents divide.
The region in which the pair of identical chromosome pieces are in contact and held together.
The process in which a parent cell's nucleus, including its chromosomes, divides.
Usually follows mitosis. Cytoplasm is divided into two daughter cells, each of which has a complete copy of the parent cell's DNA.
A planned cell suicide for cells that must be replaced.
Stages of Mitosis
The long linear chromosomes that have replicated condense during this process of mitosis.
Each of the identical DNA molecules. Two put together is referred to as sister chromatids.
Part of a cell's cytoskeleton, thought of as a group of parallel threads stretching between two ends, or poles.
The pole like structure in which the spindle attaches to.
Thread like fibers that pull the chromatids to the middle of the cell, and then eventually pull the chromatids apart as cell division proceeds.
The stage of mitosis in which the chromosomes congregate at the cell center.
The stage of mitosis in which the chromatids separate and move in opposite directions.
The stage of mitosis in which the new nuclear membranes form around two complete chromosome sets.
Unrestrained cell growth and division that can damage surround tissues.
Can divide indefinitely.
Have reduced "stickiness."
The sexual reproduction process in which offspring are produced by the fusion of two reproductive cells.
The special process that enables organisms to make special reproductive cells, known as gametes, that only have half as many chromosomes as the body's other cells.
Cells that have two copies of each chromosome.
Cells that have one copy of each chromosome.
The testes and ovaries in sexually reproducing organisms.
Homologus Pair/ Homologues
The maternal and paternal copies of a chromosome.
(Meiosis) Cells are preparing for the chromosomes to replicate.
(Meiosis) Chromosomes condense and crossing over occurs
Recombination/ Crossing Over
Bits of genes from each parent become crosses and passes onto the chromosome.
(Meiosis) All chromosomes line up along the center of the cell
Telophase 1 and Cytokinesis
(Meiosis) Nuclear membranes reassemble around sets of sister chromatid pairs and two daughter cells form.
Meosis Division 2
(Meiosis) Separating the sister chromatids
(Meiosis) Chromosomes re-condense
(Meiosis) Sister chromatid pairs line up at the center of the cell.
(Meiosis) Sister chromatids are pulled to opposite sides of the cell.
Telophase 2 and Cytokinesis
(Meiosis) Nuclear membranes reassemble and the two daughter cells pinch into four haploid gametes.
The smaller cell of the divide in genetic material, which almost completely degrades immediately in animal cells.
X & Y Chromosomes
The human sex chromosomes.
An organism in which it can produce both male and female gametes from an individual.
A visual display of a complete set of chromosomes.
An unequal distribution of chromosomes during meiosis.
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