Question

chapter 6 study guide, part one
use your textbook, homework, and guided notes to answer these questions.

1. name the sex chromosomes for:

a. male:____
b. female:____

1. what punnet squares help determine offspring?____
2. what person discovered that traits were passed from parents to offspring?____
3. where are chromosomes located in the cell?____
4. where are the genes located in the cell?____
5. \qualitative traits\ are also called____
6. can the genetic code be changed by environmental factors?____

Explanation:

1. In humans, males have XY sex chromosomes and females have XX sex chromosomes.
2. Punnett squares help determine the probability of offspring having certain genetic traits.
3. Gregor Mendel discovered that traits were passed from parents to offspring through his experiments with pea plants.
4. Chromosomes are located in the nucleus of the cell.
5. Genes are located on chromosomes, which are in the nucleus.
6. "Qualitative Traits" are also called discrete traits as they have distinct forms.
7. Yes, the genetic code can be changed by environmental factors. For example, radiation or certain chemicals can cause mutations.

Answer:

1. a. XY b. XX
2. The probability of offspring having certain genetic traits.
3. Gregor Mendel
4. In the nucleus.
5. On chromosomes (in the nucleus).
6. Discrete traits
7. Yes