Genes, Alleles, and Dominant Traits Quiz

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Questions and Answers

What is the significance of using capital letters to represent alleles?

  • They indicate homozygous alleles
  • They indicate dominant alleles (correct)
  • They indicate sex-linked alleles
  • They indicate heterozygous alleles

In genetics, what does a homozygous individual mean?

  • They have one dominant and one recessive allele for a gene
  • They have the same two alleles for a gene, either both dominant or both recessive (correct)
  • They have two different alleles for a gene
  • They have two recessive alleles for a gene

What is the function of a Punnett square in genetics?

  • To predict the number and variety of genetic combinations (correct)
  • To determine if an individual is homozygous or heterozygous
  • To identify sex chromosomes in an individual
  • To determine the phenotypic outcomes of a genetic cross

What does the genotype of an organism represent?

<p>The genetic composition of an individual for a specific trait (C)</p> Signup and view all the answers

How many pairs of homologous chromosomes are present in human cells?

<p>23 pairs (C)</p> Signup and view all the answers

What determines the sex of an individual?

<p>The chromosomes contributed by the sperm (D)</p> Signup and view all the answers

Which parent always passes on an X chromosome to their offspring?

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

Why are males more affected by x-linked disorders compared to females?

<p>Males only have one gene for these traits (D)</p> Signup and view all the answers

How many genes are present on the X chromosome?

<p>2000 (C)</p> Signup and view all the answers

What type of genes are diseases and disorders that are x-linked considered to be?

<p>Recessive genes (B)</p> Signup and view all the answers

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