Unit 3 Genetics

Question 1

Gene

Answer 1

is a heritable factor that consists of a length of DNA and influences of DNA and influences a specific characteristics

Question 2

locus

Answer 2

is the place on the chromosome where a gene is located

Question 3

Alleles

Answer 3

are a various specific forms of a gene

Question 4

Mutation

Answer 4

is a change to the structure of a gene caused by the alteration of a single base units in the DNA. A mutation may be inherited by subsequent generations, or may affect only the individual in which it occurs. Mutations can be caused by exposure to radiation or carcinogens, or by errors in replication or transcription

Question 5

Single nucleotide polymorphisms

Answer 5

are caused by point mutations that give rise to different alleles containing alternative bases at a given nucleotide position within a locus