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
Passing of traits from parents to offspring.
What is heredity?
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
Male reproductive cell in animals. It is haploid and has a tail.
What is sperm?
200
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?
200
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?
200
One set of instructions for an inherited trait.
Factors that control traits.
What are genes?
200
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?
200
A haploid male or female reproductive cell (e.g. sperm and egg)
What are gametes?
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
A rare change in the DNA of a gene, ultimately creating genetic diversity.
What is a mutation?
300
Chromosomes separate
and pull to opposite sides of the cell.
What is Anaphase?
300
reproduction that results from combining genetic material from two individuals (a male and a female). The result of meiosis.
What is sexual reproduction?
300
Female reproductive cell in animals.
What is an egg?
400
Natural differences between a species.
What are Variations?
400
Passing of traits from parents to offspring.
What is Heredity?
400
Two identical structures of a chromosome held together by a CENTROMERE.
What are Chromatids?
400
A cell containing a single set of chromosomes (one of each kind - half)
What is a haploid?
400
Symbol for diploid number of chromosomes in a cell.
What is 2n?
500
An inherited trait that helps an organism survive and reproduce in its environment.
What is adaptation?
500
Offspring have different traits that improve the chance that some will survive environmental changes.
What is Genetic Variation?
500
Nuclei form.
A new nuclear membrane forms around each group of chromosomes.
What is Telophase?
500
A pair of chromosomes of the same size, shape and have the same gene; one from each parent.
What are homologous pairs?
500
Symbol for haploid number of chromosomes in a cell.