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
In eukaryotic cells, it is the part of the cell cycle during which the nucleus divides.
What is mitosis?
100
An inherited characteristic that an organism can pass on to its offspring through its genes. A genetically determined characteristic.
What is a trait?
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
when all of the members of a species have died.
What is extinction?
200
Passing of traits from parents to offspring.
What is heredity?
200
Ability to generate offspring.
What is reproduction?
200
Produces four cells (each a haploid cell = 1n) that are different genetically
What is meiosis?
200
Female reproductive cell in animals.
What is an egg?
300
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 was Charles Darwin?
300
natural differences within a species.
What is variation?
300
Chromosomes separate and pull to opposite sides of the cell.
What happens in anaphase?
300
A pair of chromosomes of the same size, shape and have the same gene; one from each parent.
What are homologous pairs?
300
A sperm cell and an egg join together
What is fertilization?
400
an inherited trait that helps an organism survive and reproduce in its environment.
What is adaptation?
400
The cell grows and carries out normal life functions; organelles duplicate; DNA replicates; the cell grows twice its size and prepares for mitosis
What happens in interphase?
400
Reproduction, growth and repair
What are the three reasons cells divide?
400
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 result of a sperm fertilizing an egg
What is a zygote?
500
process by which organisms inherit advantageous traits that let them reproduce more successfully than the other organisms do.
What is natural selection?
500
Offspring have different traits that improve the chance that some will survive environmental changes.
What is genetic variation?
500
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?
500
when homologous chromosomes exchange genes during Prophase 1 creating new mixture of parent traits in their offspring
What is crossing over?
500
a section of the DNA (chromosome) that codes for a specific trait (e.g. eye color or hair color)