7 Albinism is a genetic trait resulting from the inheritance of recessive alleles. (a) (i) Distinguish between the terms allele and gene. (ii) Explain the meaning of the term recessive allele.

a i) a gene is a section of DNA that codes for a protein and has a specific location on a chromosome while an ellel is just a different form of a gene

ii) a recessive allele is one that is expressed in the phenotype of an organism only if a dominant allele is not present

EI

Related Biology A Level answers

All answers ▸

What is Mitosis?


Describe the differences between the primary and secondary immune responses in terms of B cells and antibody production. Include in your answer a definition of an antibody.


Explain how during the light independent reaction of photosynthesis carbon dioxide is converted to organic substances.


How do enzymes work?