Snurfle Meiosis and Genetics 2 — Worksheet Questions (Grade 9)

Crossing Over: What process in cells undergoing meiosis increases genetic diversity?

• Crossing over

• DNA replication

• Binary fission

• Mitosis

Crossing Over: How many cells are produced by meiosis?

• Two

• Three

• Four

• Eight

Tags

NGSS.HS-LS3-2

Crossing Over: How many varieties of gametes are produced by meiosis without crossing over?

• One

• Two

• Three

• Four

Crossing Over: In the interactive activity, what are the possible phenotypes for fur color and what gene represents each?

• Green fur (G) and blue fur (g)

• Brown fur (B) and white fur (W)

• Striped fur (S) and spotted fur (s)

• Red fur (R) and yellow fur (y)

Tags

NGSS.HS-LS3-2

NGSS.HS-LS3-1

NGSS.HS-LS1-1

Crossing Over: In the interactive activity, what are the possible phenotypes for wings and what gene represents each?

• Winged (W) and wingless (w)

• Long wings (L) and short wings (l)

• Feathered wings (F) and smooth wings (f)

• Curved wings (C) and straight wings (c)

Tags

NGSS.HS-LS3-1

Crossing Over: What are the phenotype possibilities for the gametes in question 3 given this information?

• Only parental combinations of fur color and wing type

• Four unique combinations including recombinant types

• Only wing phenotypes vary while fur color stays the same

• No variation in fur color or wings

Tags

NGSS.HS-LS3-2

NGSS.HS-LS3-1

Crossing Over: What do you call two genes that are often inherited together?

• Independent genes

• Linked genes

• Dominant genes

• Recessive genes

Crossing Over: When does crossing over start? When does it end?

• Starts in prophase I and ends by metaphase I

• Starts in metaphase I and ends in anaphase I

• Starts in prophase II and ends in telophase II

• Starts in anaphase I and ends in telophase I

Crossing Over: What is crossing over?

• The random alignment of homologous chromosomes

• The exchange of DNA between homologous chromosomes

• The separation of sister chromatids

• The replication of chromosomes before meiosis

Tags

NGSS.HS-LS3-2

Crossing Over: What exchanges DNA during crossing over?

• Sister chromatids

• Centrioles

• Homologous chromosomes

• Spindle fibers