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Heredity
science
Question | Answer |
---|---|
heredity | the passing of traits from parents offspring |
triat | A characteristic that an organism can pass on to its offspring though its gene |
genetics | The scientific study of heredity. |
fertilization | The joining of a perm and an egg. |
purebred | Organism is the offspring of many generations that have the same trait. |
gene | The set if information that controls a trait; a segment of DNA on a chromosomes that codes for a specific trait. |
alleles | The different forms of a gene. |
dominant allele | An alleles whose trait always shows up in the organism when the allele is present |
recessive allele | An allele that is masked when a dominant allele is present |
hybrid | An organism that has two different alleles for a trait; an organism that is heterozygous for a particular trait |
Punnett square | A chart that shows all the possible combination of alleles that can result from a genetic cross |
phenotype | An organism's physical appearance, or visible traits. |
genotype | An organism's genetic makeup, or allele combination |
homozygous | Having two identical alleles for a trait. |
heterozygous | Having two different alleles for a trait. |
codominance | A condition in which neither of two alleles of a gene is dominant or recessive |
meisos | The process that occurs in the information of sex cells (sperm and egg) by which the number of chromosomes is reduced by half. |
messenger RNA | RNA that copies the coded message from DNA in the nucleus and carries the message into the cytoplam |
transfer RNA | RNA is the cytoplasm that carries an amino acid to the ribosome and add it to the growing protein chain |
mutation | A change in a gene or chromosome. |