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Gentic Unit Vocab
Genetic Unit Key Vocab
Term | Definition |
---|---|
Heredity-The passing of traits from parents to offspring | |
2.Trait-A characteristic that an organism can pass on to its offspring through its genes | |
3.Purebred~when an organism has two of the same DNAs. | |
4.Hybrid~when an organism has two different DNAs | |
5.Offspring - the product of the reproductive process of an animal. A child | |
6.Gene-the set of information that controls a trait | |
7.Alleles-the different forms of a gene | |
8.Dominant~an allele whose traits always up in the organism when the allele is present | |
9.Recessive-an allele that is masked when a dominant allele is present | |
.Phenotype-an organism's physical appearance,or visible traits | |
11.Genotype-an organism's genetic makeup,or allele combinations | |
12.Homozygous-having two identical alleles for a trait | |
13.Heterozygous-having two different alleles for a trait | |
14.Codominance-a condition in which neither of two alleles of a gene is dominant or recessive | |
15.Meiosis-the process that occurs in the formation of sex cells | |
16.Haploid cells - A cell that is the result of meiosis and has half the number of chromosomes as the original cell. | |
17.Diploid cells - A cell that is the result of mitosis and has the same number of chromosomes as the original cell. | |
18.Mutations-a change in a gene or chromosome | |
19. Insertion-one base pair is added | |
20.Deletion-one base pair is removed | .Deletion-one base pair is removed |
21.Substitution- one base pair is substituted for another | |
22.Sex-linked gene-a gene that is carried on the X or Y chromosomes | |
23.Carrier-a person who has one recessive allele for a trait,but does not have the trait | |
24. Sex chromosome-a pair of chromosomes carrying genes that determine whether a person is male or female | |
25.Genetic disorder- an abnormal condition that a person inherits through genes or chromosomes | |
26. Pedigree-a chart or ¨family tree¨ that tracks which members of a family have a particular trait | |
27. Selective breeding-the process of selecting a few organism with desired traits to serve as parents of the next generation | |
28.Inbreeding-a selective breeding method in which two individuals with identical or similar sets of alleles are crossed | |
29. Hybridization-a selective breeding method in which two genetically different individuals are crossed | |
30. Clone-an organisms that is genetically identical to the organism from which it was produced | |
31.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 | |
32.Gene therapy- the insertion of working copies of a gene into the cells of a person with a genetic disorder in an attempt to correct the disorder | |
33 - 40. You should add at least 8 additional words from chapters 4 & 5 | . You should add at least 8 additional words from chapters 4 & 5 |
33. Punnett Square~ is a chart that shows all the possible combinations of alleles that can result from a genetic cross | |
34. Genetic Cross~the allele that each parent will pass on to its offspring is based on probability | |
35. Probability~is a number that describes how likely it is that an event will occur | |
36. Chromosomes~ made up of many genes joined together | |
37. karyotype~a picture of all the chromosomes in a cell | |
38. Genetic~ the scientific study of heredity | |
messenger RNA- | copies the coded message from the DNA in the nucleus, and carries the message to ribosomes in the cytoplasm |
Transfer RNA- | carries amino acids to the ribosomes and adds them to the growing protein |