Ch 5 - Heredity

Question 1

dominant trait

Answer 1

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

Question 2

recessive trait

Answer 2

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

Question 3

gene

Answer 3

one set of instructions for an inhereted trait

Question 4

allele

Answer 4

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

Question 5

phenotype

Answer 5

an organism’s appearance or other detectable characteristic

Question 6

geneotype

Answer 6

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

Question 7

probability

Answer 7

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

Question 8

homologous chromosomes

Answer 8

chromosomes that have the same sequence of genes and the same structure

Question 9

meiosis

Answer 9

a copying process that produces cells with half the usual number of chromosomes

Question 10

sex chromosomes

Answer 10

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

Question 11

pedigree

Answer 11

a diagram shows the occurence of a genetic trait in several generations of a family

Question 12

Heredity

Answer 12

The passing of genetic traits from parent to offspring