Summer School Biology - CH 6 - Sections I

In the 1860s, Gregor Mendel conducted experiments that established _______________.

• the Co-dominance Theory

• Modern Genetics

• the Bloodline Theory

• the Blending Hypothesis

What is a trait?

• Any characteristic that can be passed from plants to animals

• Any characteristic that can be passed from one species to another

• Any characteristic that can be passed from parent to offspring

• Any characteristic that can be passed through a cell memebrane

What did Mendel call a trait that did not appear in an F1 hybrid?

• Co-dominant Trait

• Parental Trait

• Recessive Trait

• Dominant Trait

Mendel hypothesized that each trait is controlled by a factor, now called a ___________.

• Hybrid

• Allele

• Recessive

• Gene

Each of the seven traits that Mendel studied occurred in ___________.

• Two distinct, observable forms

• All plants

• All plants and animals

• One observable form

A hybrid is an organism that receives different genetic traits from __________.

• Different parts of its body

• Each parent

• A single parent

• Changes in the environment

If the blending hypothesis had been correct, what color would the offspring of a green pea and yellow pea be?

• Green

• Yellow

• Chartruse

• Yellow and Green stripes

The offspring of a cross between parents that have contrasting traits:

• purebred

• hybrid

• dominant

• recessive

What do we call a distinct version of a gene?

Example: White flowers on a pea plant vs. purple flowers.

• Allele

• Trait

• Dominant

• Recessive

Why were pea plants perfect a study on Heredity?

• Pea plants are complex

• They were easy to study

• One gene controlled one trait. (i.e. it was simple)

• One gene was controlled by multiple traits