What Happens Physically During the Process of Crossing Over

question 8

Multiple Choice

What happens physically during the process of crossing over?

• A)Two homologous chromatids break and rejoin at random sites along the chromosome.
• B)The genetic information on one chromatid is replaced by copying genetic information from a homologous chromatid without there being any physical exchange between the chromosomes.
• C)Two homologous chromatids break and rejoin at precisely the same site along the chromosome so that there is no loss or gain of material on either product.
• D)It is not known what occurs during crossing over.

---

Definitions:

Expression

A combination of variables, operators, and values that produces a result or value when evaluated.

Binary Operators

Operators that operate on two operands and perform operations like addition, subtraction, multiplication, or logical comparison.

Unary Operators

Operators that operate on a single operand to perform various operations like negation, increment, or decrement.

Operands

The entities on which operators perform operations in expressions, such as variables or values.