Heredity Ch. 5

Question 1

Heredity

Answer 1

The passing of genetic traits from parent to offsprings.

Question 2

Dominant trait

Answer 2

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

Question 3

Recessive trait

Answer 3

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

Question 4

Gene

Answer 4

One set of instructions for an inherited trait

Question 5

Allele

Answer 5

One of the alternative forms of a gene that governs a carahistic, such as hair color

Question 6

Phenotype

Answer 6

An organisms appearance or other detectable characteristic

Question 7

Genotype

Answer 7

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

Question 8

Probability

Answer 8

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

Question 9

Homologous chrosomes

Answer 9

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

Question 10

Meiosis

Answer 10

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

Question 11

Sex chromosomes

Answer 11

One of the pair of cromosomes that determine the sex of an individual

Question 12

Pedigree

Answer 12

A diagram that shows the occurrence of a genitic trait in several generations of a family