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Genetics Chapter 5 Quiz

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Questions and Answers

What is the result of nondisjunction during meiosis or mitosis?

Formation of recombinant chromosomes

Development of a zygote

Improper separation of the sister chromatids or homologous chromosomes (correct)

Initiation of protein synthesis

What is a recombinant chromosome?

A somatic cell undergoing mitosis

A chromosome with three copies of chromosome 21

A chromosome that determines sex

A chromosome formed from crossing over between parental chromosomes (correct)

Which statement accurately describes a somatic cell?

Any cell in the organism except sperm or egg cells (correct)

A cell responsible for sex determination

A cell that gives rise to gametes

A diploid cell produced from fertilization

What condition is associated with trisomy 21?

Down syndrome Signup and view all the answers

What is the role of translocation in genetics?

It involves the attachment of a chromosome fragment to a non-homologous chromosome Signup and view all the answers

What is a characteristic of an autosome?

It is not involved in sex determination. Signup and view all the answers

What occurs during crossing over?

The exchange of genetic material between non-sister chromatids. Signup and view all the answers

What is the result of nondisjunction during meiosis?

A gain or loss of chromosomes in gametes. Signup and view all the answers

What defines a diploid cell?

Has two sets of chromosomes. Signup and view all the answers

Which of the following is a result of a deletion mutation?

Loss of a chromosome region. Signup and view all the answers

Which of the following statements is true regarding homologous chromosomes?

One is inherited from the mother, the other from the father. Signup and view all the answers

What is the primary purpose of meiosis in sexually reproducing organisms?

To create cells with half the number of chromosome sets. Signup and view all the answers

What does a karyotype display?

The chromosome pairs arranged by size and shape. Signup and view all the answers