8A. Monohybrid Crosses Flashcards
1
Q
Pure breeding
A
when crossed, always give rise to offspring that are like the parents. Are homozygous.
2
Q
Hybrid
A
when crossed, may give rise to offspring that display different characteristics. Are heterozygous.
3
Q
Monohybrid crosses involve
A
only one gene, found on one chromosome.
4
Q
Monohybrid cross instructions
A
- Assign letters to each allele
- Draw a 2 × 2 grid, write father’s and mother’s alleles
- Write the gametes
- Determine genotype frequency
- Determine phenotype frequency
5
Q
What is a test cross performed with
A
dominant phenotype and unknown genotype is cross with a homozygous recessive individual
6
Q
Results indicate…
A
the individual with dominant phenotype is homozygous dominant or heterozygous
