Ch. 3-4 Quiz 1

You find a plant with 12 chromosomes in its somatic cells and germ cells, and 6 chromosomes in its gametes. What is n = ?

• 2

• 12

• 6

• 24

Homologous chromosomes have exactly the same ___ as one another. (Check all that apply)

• Genes

• Alleles

• Sister chromatids

• None apply

Chromosomes duplicate during...

• Interphase

• Prophase

• Prometaphase

• Metaphase

'Crossing-over' - the exchange of genetic material between homologous chromosomes - occurs during...

• Prophase I

• Prophase II

• Metaphase I

• Metaphase II

During Anaphase I, ___ separate. During Anaphase II, ___ separate.

• Sister chromatids; homologous chromosomes

• Homologous chromosomes; sister chromatids

• Non-sister chromatids; sister chromatids

• Homologous chromosomes; non-sister chromatids

During Meiosis I, nonhomologous chromosomes arrange at random and the alleles on these nonhomologous chromosomes move into daughter cells regardless of the alleles on the other chromosomes. This is...

• Mendel's law of independent assortment

• Mendel's law of segregation

• Not true

The primary determinant of maleness is...

• The Y chromosome

• The combination of X and Y chromosomes

• A single gene on the Y chromosome

• The absence of a single X-linked gene

In women, there is/are __ functional daughter cells for each completion of Meiosis. In men there is/are __.

• 1; 4

• 4; 4

• 4; 1

• 2; 4