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Genetics Answers

   1. What is the name given to a small section of DNA that codes for a protein?

  A gene

 

   2. What is an allele?

  A different form of the same gene 

 

   3. True or false? In humans, genes are found in pairs

  True

 

   4. State the female sex chromosomes

  XX

 

   5. State the male sex chromosomes 

  XY

 

   6. True or false? Cystic fibrosis is a recessive disorder

  True

 

   7. What is the phenotype?

  A set of observable characteristics of an organism

 

   8. What is the name of the scientist that made discoveries about genetic inheritance by carrying out experiments using pea plants?

  Gregor Mendel 

 

   9. What does homozygous mean?

  Two of the same alleles 

 

   10. What does heterozygous mean?

  Two different alleles