The process in which populations gradually change over time.
What is evolution?
100
Life cycle of an eukaryotic cell divided into three stages: Interphase, Mitosis and Cytokinesis.
What is the cell cycle?
100
Reproduction, growth and repair.
What are three reasons cells divide?
100
Cell division that results in 4 daughter cells that each are haploid (1n) having half the number of chromosomes as the parent cell.
What is meiosis?
100
Reproduction that results from combining genetic material from two individuals (a male and a female). The result of meiosis.
What is sexual reproduction?
200
A scientist best known for his contributions to the science of evolution. Sailed on the HMS Beagle and explored the Galapagos Islands discovering different species of finches on each island.
Who is Charles Darwin?
200
The cell grows and carries out normal life functions; organelles duplicate; DNA replicates; the cell grows twice its size and prepares for mitosis
What is interphase?
200
Chromosomes condense.
What is prophase?
200
A cell containing a single set of chromosomes (one of each kind - half)
What is a haploid?
300
The process by which organisms inherit advantageous traits that let them reproduce more successfully than the other organisms do.
What is natural selection?
300
The division of the parent's cytoplasm pinching into two new identical daughter cells in animal cells. In plant cells a CELL PLATE forms separating the two new cells.
What is cytokinesis?
300
Chromosomes line up in the center of a cell.
What is metaphase?
300
A cell containing two full sets of chromosomes (2n - one from father and one from mother). In humans, the diploid number is 46.
What is a diploid?
400
The human practice of breeding organisms (plants or animals) with specific traits in order to produce offspring with those desired traits.
What is artificial selection?
400
In eukaryotic cells, it is the part of the cell cycle during which the nucleus divides.
What is mitosis?
400
Chromosomes separate and pull to opposite sides of the cell.
What is anaphase?
400
A threadlike, gene-carrying structure found in the nucleus. Each consisting of one very long DNA molecule and associated proteins.
What is a chromosome?
500
Natural differences within a species.
What are variations?
500
A characteristic that improves an individual's ability to survive and reproduce in a particular environment.
What is an adaptation?
500
Nuclei form. A new nuclear membrane forms around each group of chromosomes.
What is telephase?
500
A haploid male or female reproductive cell (e.g. sperm and egg)