Science 8, Chapter 3, Test Flashcards Preview

8th Grade > Science 8, Chapter 3, Test > Flashcards

Flashcards in Science 8, Chapter 3, Test Deck (10):
1

What is a Pedigree?

A pedigree is a diagram that shows the occurrence of a genetic trait in several generations of a family

2

What is Heredity?

Heredity is the passing of genetic traits from parents to offspring

3

What is a Dominant Trait?

A dominant trait is a trait observed in the first generation when parents that have different traits are bred

4

What is a Recessive Trait?

A recessive trait is a trait the reappears in the second generation after disappearing in the first generation when parents with different traits are bred

5

What is an allele?

An allele is one of the alternative forms of an organism;

6

What is a phenotype?

The phenotype is the organism's appearance of other detectable property or characteristic

7

What is a genotype?

A genotype is the entire genetic makeup of an organism;
Also the contribution of genes for one or more specific traits

8

What is probability?

the likelihood that a future event will occurring in an giving instance of an event

9

Why are self-pollinating and cross-pollinating pea plans important?

Self-Pollinating- to avoid cross pollination disorders
Cross-pollinating- to determine dominant and recessive traits

10

What is a sex chromosome?

A sex chromosome is a chromosome that determines the se of an individual