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Cheatham's vocabular
science
Question | Answer |
---|---|
probability | a number that describes how likely it is that an event will occur. |
Punnet square | a chart that shows all the possible combinations of alleles that can result from a genetic cross. |
phenotype | all organism's physical appearance, or visible traits. |
genotype | an organism's genetic makeup, or allele combinations. |
homozygous | having two identical alleles for a trait. |
heterozygous | having two different alleles for a trait. |
codominant | a condition in which neither of two alleles of a gene is dominant or recessive. |
meiosis | the process that occurs in the formation of sex cells by which the number of chromosomes is reduced by half. |
mutation | a change in a gene or chromosome. |
mitosis | the stage of the cell cycle during which the cell's nucleus divides into two new nuclei and one copy of the DNA is distributed into each daughter cell. |
selective breeding | the process of selecting a few organism's with desired traits to serve as parents of the next generation. |
cloning | a technique used to produce offspring with desired traits. |
genetic engineering | the transfer of a gene from the DNA of one organism into another organism in order to produce an organism with desired traits. |
recessive | an allele that is hidden whenever the dominant allele is present. |