(2) Single Gene Inheritance

Question 1

Pure line definition?

Answer 1

Strain that is homozygous from continued inbreeding/selfing

Question 2

True breeding parents definition?

Answer 2

Pure line where progeny are identical to parents

Question 3

Backcross definition?

Answer 3

Cross between offspring and one of its parents

Question 4

Test cross definition?

Answer 4

Mating between individual of unknown genotype with tester known to carry only recessive genes

Question 5

Mendels first law (segregation)?

Answer 5

Two alleles for each trait will separate during gamete formation and each allele has equal probability of going into either gamete

Question 6

Complete dominance?

Answer 6

One allele masks the effect of another

Question 7

Incomplete dominance?

Answer 7

Failure of dominant phenotype to be fully expressed in organism being heterozygous, heterozygous has intermediate

Question 8

Co-dominance?

Answer 8

Expression of both alleles affect phenotype of the heterozygous offspring