Question | Answer |
What is an unicellular organism? | An organism that reproduces through cell division. |
What is a multicellular organism? | An organism that divides and reproduces by growing developing and repairing. |
What is DNA? | A chemical that contains information for an organism's grown & functions. |
Which two men built a model of DNA in 1953? | Watson & Crick |
What are chromosomes? | DNA wrapped around protein and compacted into structures. |
What are chromatids? | Two identical chromosomes. |
What is a centromere? | The thing that holds together chromatids. |
How many chromosomes does a human have? | 46 |
What is Asexual reproduction? | The process in which an organism develops tiny buds on its body, containing the parents exact genetic material in the offspring. |
What is an example of Regeneration? | Repairing a lost limb. |
What is the order of cell division? | Interphase, Prophase, Metaphase, Anaphase, Telophase, and Cytokinesis. (Remember: I pushed Marcus at the cookie!) |
What is Sexual Reproduction? | A cell from the mother combined with the cell from the father, so the offspring gets genetic information from both parents. |
Gametes? | Cells that contain half the usual number of chromosomes. |
Genetics? | Parents passing genes to their offspring. |
A gene? | A unit of heredity that occupies a specific location on a chromosome and codes for a particular product. |
A female has 2.....chromosomes | X |
A male has an.....Chromosome, and a...... Chromosome. | X and Y |
The 23rd pair of chromosomes are called sex chromosomes. Why? | They determine the sex of the organism. |
Who investigated heredity? | Gregor Mendel |
Phenotype | Physical Characteristics |
Genotype | The genes an organism has. |
Dominant trait | 1 or 2 copies can show through |
Recessive Trait | 2 MUST be there for it to show through |