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7th GEN 1 MODIFIED
CK NIGHT shortened list
Term | Definition |
---|---|
Allele | several forms of a gene that is responsible for heredity variations different forms of a gene |
Asexual reproduction | form of reproduction that does not involve meiosis and only one “parent” involved: this is an exact replica of the “parent” |
Chromosome | DNA molecules in a cell's nucleus twisted into a small rod shape- the genetic material of the cell ; threadlike bodies consisting of chromatin that carry genes in a linear order; genes are carried from parents to offspring by chromosomes. they come in a p |
DNA | nucleic acid that contains the genetic instructions of a cellular form of life |
DNA Replication | process of copying a double strand DNA in a cell prior to cell division |
Dominant allele | expresses its phenotypic effect even when heterozygous with a recessive allele; the allele that always shows up if it is present for that gene |
double helix | the spiral arrangement of the 2 complimentary strands of DNA |
Egg | haploid sex cell formed in the female reproductive organs |
Evolution | change in the gene pool of a population from generation to generation by such processes as mutation, natural selection, and genetic drift of obtaining something from a mixture or compound by chemical, physical or mechanical means |
Gametes | the cells involved in sexual reproduction (contain half of the genetic information of somatic cells) 0 |
Gene | basic unit of heredity; segment of DNA on a chromosome that has a code for a specific trait |
Generation | the offspring of a certain parent or couple, considered as a step in natural descent |
genetic engineering | the deliberate modification of the characteristics of an organism by manipulating its genetic material |
genetics | the study of heredity |
Genotype | sum total of genes transmitted from parent to offspring; the allele combination (TT, Tt, tt) |
fertilization | in sexual reproduction, the joining of a sperm and egg |