Genetics Basics Quiz
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Questions and Answers

What term refers to a specific, fixed position on a chromosome where a particular gene is located?

  • Allele
  • Monohybrid
  • Locus (correct)
  • Genome

Which term describes a trait that masks the expression of another trait when both versions of the gene are present in an individual?

  • Homozygous
  • Phenotype
  • Dominant (correct)
  • Recessive

What is the term for the underlying genetic makeup of an organism, consisting of both physically visible and non-expressed alleles?

  • Gene
  • Chromosomes
  • Heterozygous
  • Genotype (correct)

What is the term for having two different alleles for a given gene on homologous chromosomes?

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

What does the term 'phenotype' refer to?

<p>Observable traits expressed by an organism (D)</p> Signup and view all the answers

What is the result of a cross between two true-breeding parents that express different traits for only one characteristic?

<p>Monohybrid (D)</p> Signup and view all the answers

What is the result of a cross between two true-breeding parents that express different traits for two characteristics?

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

Which law states that in a heterozygote, one trait will conceal the presence of another trait for the same characteristic?

<p>Law of Dominance (D)</p> Signup and view all the answers

What does the Law of Segregation state about the allele for each gene during gamete formation?

<p>They segregate equally into gametes (B)</p> Signup and view all the answers

Which type of traits are attached to the sex chromosomes?

<p>Sex-linked traits (D)</p> Signup and view all the answers

How many pairs of chromosomes are called autosomes?

<p>22 pairs (C)</p> Signup and view all the answers

What determines whether an individual is male or female in humans and other mammals?

<p>Presence of Y chromosome (B)</p> Signup and view all the answers

What do males receive from their father in terms of chromosomes?

<p>One Y chromosome (C)</p> Signup and view all the answers

What is the term for the independent assortment of genes, as illustrated by a cross between two true-breeding parents that express different traits for two characteristics?

<p>Dihybrid cross (C)</p> Signup and view all the answers

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