Heredity

Question 1

the passing of genetic traits from parent to offspring.

Answer 1

Heredity

Question 2

the trait observed in the first generation when parents that have different traits are bred.

Answer 2

Dominant trait

Question 3

a trait that reappears in the secong generation after disappearing in the first generation when parents with different traits are bred.

Answer 3

Recessive trait

Question 4

one set of instrutions for an inherited trait.

Answer 4

Genes

Question 5

one of the allternative forms of a gene that governs a characteristic, such as hair color.

Answer 5

Alleles

Question 6

an organism’s apperence or other detectable characteristic.

Answer 6

phenotype

Question 7

the entire genetic makeup of an organism; also the combination of genes for one or more specific traits.

Answer 7

genotype

Question 8

the likelehood that a possible future event will occur in any given instance of the event.

Answer 8

Probablity

Question 9

a process in cell division during which the number of chromosomes decrease to half the original number by two divisions of the nucleus, which results in the production of sex cells.

Answer 9

meiosis

Question 10

one of the pair of chromosomes that determine the sex of an individual.

Answer 10

sex chromosomes

Question 11

a diagram that shows the occurrence of a genetic trait in several generations of a family.

Answer 11

pedigree

Question 12

Deoxyribonucleic acid, a molecule that is present in all living cells and that contains the information that determines the traits that a living thing inherits and needs to live.

Answer 12

DNA

Question 13

in a nucleic-acid chain,a subunit that consists of a sugar, a phosphate, and a nitrogenous base.

Answer 13

nucleotide

Question 14

a change in the nucleotide-base sequence of a gene or DNA molecule.

Answer 14

mutations

Question 15

ribonucleic acid, a molecule that is present in all living cells and that plays a role in protein production.

Answer 15

RNA