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Terms in this set (26)
The passing of traits from parents to offspring.
A segment of DNA on a chromosome that codes for a specific trait.
An alternative form of a gene.
A chromosome is an organized structure of DNA, protein, and RNA found in cells. It is a single piece of coiled DNA containing many genes, regulatory elements and other nucleotide sequence.
Term used to refer to an organism that has two identical alleles for a particular trait.
Term used to refer to an organism that has two different alleles for a particular trait.
A characteristic that an organism can pass on to its offspring through its genes.
Describes a trait that covers over, or dominates, another form of that trait.
Describes a trait that is covered over, or dominated, by another form of that trait and seems to disappear.
An organism's genetic makeup, or allele combinations.
An organism's physical appearance, or visible traits.
A chart that shows all the possible combinations of alleles that can result from a genetic cross.
Demonstrated by the difference in appearance that offspring show from parents and siblings.
A nucleic acid found in the nucleus of all living cells, which carries the organism's hereditary information.
A measure of the likelihood of an event. It is the ratio of the number of ways a certain event can occur to the number of possible outcomes. A possibility of genetic combinations for the next generation from test crosses.
A group of identical individuals that always produce offspring of the same phenotype when crossed, they are homozygous individuals eg: either BB or bb
An organism that has two different alleles for a trait; or is heterozygous for a particular trait eg: Bb
Scientific study of heredity
Cell's division (PMAT) of the nucleus. Final product is 2 cells that are exactly like the parent cell.
Cell division that produces reproductive cells (sperm & egg) in sexually reproducing organisms.
The pair of chromosomes (X & Y) responsible for determining the sex of an individual.
Cells involved in sexual reproduction; sperm and egg cells
In heterozygotes both traits are expressed, for example breeding a white bear with a black bear results in offspring that have both black and white patches together.
Made up of more than one cell specialized to carry out a specific function.
consisting of a single cell
Benefit of being multicellular
Grow by producing more small cells, not larger cells. Large cells have too small of a surface-to-volume ratio
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