Cells and Cell Theory
The "gatekeeper" of the cell.
Cell Membrane
He confirmed the findings of Anton Van Leeuvenhoek.
Robert Hooke
During development, cells divide to create a larger and more mature organism.
Mitosis
Physical __________ are characteristics such as having free earlobes, a widow's peak, or eye color.
Traits
________________ alleles mask the recessive trait and are represented by an ______________ letter.
Dominant, uppercase
The location of DNA in the cell.
Nucleus
A Dutch scientist who looked ab blood, rain water, and teeth scrapings. He is considered the father of microbiology.
Anton Van Leeuvenhoek
Organisms use cell division to form offspring.
Meiosis
The physical appearance of a trait.
Phenotype
_____________ alleles are masked by the dominant allele and are represented by a _____________ letter.
Recessive, lowercase
These are located at a specific location on the chromosome.
Genes
He studied pea plants and is considered the "father of modern genetics".
Gregor Mendel
Cell division for _____________ creates offspring with traits from both mother and father and is not an exact copy of either parent.
Reproduction
Genotype is the organism's ____________ combinations.
Allele
These blood type allele(s) is/are recessive.
O or i
The chemicals that make up the bases of the DNA double helix.
Adenine, Thymine, Guanine and Cytosine
She contributed a great deal of research about the structure of DNA.
Rosalynn Franklin
Cell division for ______________ and _____________. It makes exact copies of the cell.
Another name for purebred when both alleles are the same.
Homozygous
Blood type alleles that are codominant and are represented with these ______________ letters.
Type A (IA) and Type B (IB)
The 3 parts of cell theory.
All living things are made of cells.
All living cells arise from other living cells.
The cell is the fundamental unit of all living organisms.
They are credited with discovering the double helix structure of DNA.
Watson and Crick
During reproduction each parent contributes 23 _______________ to the offspring. Human beings have a total of ________ of these.
chromosomes, 46
Another name for hybrid when both alleles are different.
Heterozygous
These two blood type crosses result in a 50% probability that offspring will have a blood type O.
IA, i and ii