When a portion of a chromosome breaks off and

When a portion of a chromosome breaks off and attaches to a different chromosome this is called
a ____________
Why does the possibility of Down syndrome increase as the mother’s age increases?
What makes up a tetrad?
Describe what happens during crossing-over.
The failure of sister chromatids to separate during meiosis is called __________
What are the functions of meiosis?
How does nondisjunction during meiosis I differ from nondisjunction in meiosis II?
Crossing over between sister chromatids does not result in recombination of genetic material
while crossing over between non-sister chromatids does because?
What do spindle fibers do?
In humans, what cells does meiosis occurs in?
Synapsis occurs during which cellular division process?
Homologous chromosomes are composed of what?

A tumor suppressor gene undergoes a mutation that causes it to lose its normal function. What
would most likely be the result of this mutation?
Describe the steps of fertilization in the correct order.