| A | B |
|---|
| The substitution of one base for another during DNA replication is an example of a(n) | mutation |
| A section of DNA has the base sequence TGAG. The corresponding section of a messenger RNA molecule will have the base sequence | ACUA |
| ____________________ RNA adds amino acids to a growing protein. | TRANSFER |
| A set of three bases codes for one specific ____________________ in a protein. | AMINO ACID |
| The genetic code is found in the order of nitrogen ____________________ along a gene. | BASES |
| The chromosomes in a pair may each have different ____________________ for each gene. | ALLELES |
| If all of the sex cells of an organism have the T allele, the genotype of that organism must be ____________________. | TT |
| The process in which a parent cell divides twice to produce sex cells is called ____________________. | MEIOSIS |
| Genes are carried from parents to their offspring on structures called ____________________. | CHROMOSOMES |
| An organism that has two dominant or two recessive alleles is said to be ____________________ for that trait. | HOMOZYGOUS |
| In a cross between two hybrid Tt pea plants, ____________________ percent of the offspring will be Tt. | 50 |
| A chart used to predict results of genetic crosses is known as a(n) ____________________. | PUNNET SQUARE |
| Mendel used the principles of ____________________ to predict what percent of offspring would show a particular trait. | PROBABILITY, MATH |
| A mutation in a ______ cell can be passed to offspring. | SEX, GAMETE, SPERM/EGG |
| _______ RNA carries coded messages from the nucleus to the cytoplasm. | MESSENGER |
| The sex cells produced by meiosis have ______ the number of chromosomes as the parent cells. | HALF |
| An organism’s ________ is its allele combinations. | GENOTYPE |
| A mutation is harmful to an organism if it | reduces the organism’s chances for survival and reproduction. |
| Where does protein synthesis take place? | on the ribosomes in the cytoplasm of the cell |
| What do transfer RNA molecules do during protein synthesis? | carry amino acids and add them to the growing protein |
