Chapter 4: Genetics Practice Questions
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Questions and Answers

Who is credited with developing the first workable theory of the transfer of inherited traits?

  • Alfred Wallace
  • Charles Darwin
  • Gregor Mendel (correct)
  • Louis Pasteur

What is the term used for each chromosome segment that controls a trait?

  • Chromatid
  • Allele (correct)
  • Nucleotide
  • Codon

Which nitrogen base is NOT correctly listed among the options?

  • Guanine
  • Thymine
  • Adenine
  • Cystine (correct)

What does RNA primarily do in relation to genetic information?

<p>Forms a blueprint for construction (D)</p> Signup and view all the answers

What are characteristics developed as a result of the environment known as?

<p>Phenotype (A)</p> Signup and view all the answers

What best describes the term 'heterosis' in genetics?

<p>Hybrid vigor (A)</p> Signup and view all the answers

How long does it usually take to develop a new variety of hybrid corn?

<p>3 years (C)</p> Signup and view all the answers

3

<p>A Punnett square is used to show possible genetic combinations. (A)</p> Signup and view all the answers

Flashcards

Who is the father of genetics?

Gregor Mendel is considered the father of genetics, laying the foundation for understanding how traits are inherited. He made groundbreaking discoveries through his experiments with pea plants.

What is an allele?

An allele represents a specific version of a gene. Think of it as a unique instruction for a particular trait.

Which is NOT a nitrogen base: Cystine, Adenine, Guanine, Thymine?

Cystine isn't a nitrogen base. It's an amino acid, a building block of proteins.

What is the role of RNA in genetics?

RNA, or ribonucleic acid, acts as a messenger for genetic information. It copies DNA's instructions and directs protein synthesis.

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What is a phenotype?

The phenotype represents the observable traits of an organism, influenced by both genes and the environment.

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What is heterosis in genetics?

Heterosis is the phenomenon of hybrid vigor, where offspring display enhanced traits compared to their parents.

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How long does it take to develop a new hybrid corn variety?

Developing a new hybrid corn variety typically takes 3 years, involving careful breeding and selection.

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What is a Punnett square used for?

A Punnett square is a graphical tool used to visualize and predict the potential combinations of alleles in offspring.

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