Big idea 16 (genetics)
Terms in this set (20)
are made of molecules such as adenine, thymine, guanine,and cytosine that make-up the "rungs" of DNA
The process in which DNA copies itself before a cell divides.
The passing of physical characteristics, or traits, from parents to offspring. Some traits are visible and some are not.
The scientific study of heredity.
The process in sexual reproduction in which an egg cell and a sperm cell join to form a new cell called a zygote.
An organism that carries 2 dominant or 2 recessive alleles for a given trait is said to be be "pure" for that trait. AKA Homozygous
It is one of the possible forms of a gene. Most genes have two alleles, a dominant allele and a recessive allele. Each parent contributes one.
An allele whose trait is always visible in the organism when the allele is present.
An allele that is hidden whenever the dominant allele is present and will only be visible if there are 2 recessive alleles.
In genetics, an organism that carries both a dominant and recessive allele for the same trait. AKA Heterozugous
A number that describes how likely it is that a particular event will occur.
A table that shows all the possible combinations of alleles that can result from a genetic cross.
A chart that shows the presence or absence of a trait according to the relationships within a family across several generations.
An organism's physical appearance or visible traits.
An organism's actual genetic makeup or allele combinations. RR, Rr, rr
Having two identical alleles for a particular gene. TT, BB, tt, bb
Having two different alleles for a particular gene. Ww, Gg
The process of cell division that forms of sex cells (sperm and egg) in which the number of chromosomes is reduced by half as compared to the parent cell.
The process in cell division by which the nucleus divides, typically consisting of four stages, prophase, metaphase, anaphase, and telophase, and normally resulting in two new nuclei, each of which contains a complete copy of the parental chromosomes. (aka daughter cells)
Cell division is the process in which a parent cell divides, giving rise to two or more daughter cells.
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