Genetic Terms
What is an allele?
One of two or more lternative forms of a gene
What is it called when an individual has one dominant allele and one recessive allele?
Heterozygous/Heterozygote
What is a dihybrid cross?
Cross between two parents looking at two characteristics.
What is a monohybrid cross?
A cross between two parents looking at a single characteristic.
What is a Locus?
A specific place on a chromosome occupied by an allele.
How many daughter cells does meiosis make?
4
What is the genotype for a true breeding parental cross?
Homozygous dominant with a homozygous recessive. PPTT and pptt
If parent 1 has Hh and parent 2 has Hh, What is the probability that their child is born with Hh?
50%
What is a phenotype?
The appearance of manifestation of a characteristic
How many chromosomes would an organism with 2n=50 produce in a gamete?
25
How many characteristics does a dihybrid cross-account for?
2
What is the chance of getting a heterozygous recessive individual when there is a cross between an AA-dominant individual and an aa recessive individual?
100%
What is a genotype?
Sets of alleles possessed by an individual organism
True or False? A homozygous dominant genotype can be represented by AA.
True
What phenotypic ratio does a dihybrid cross create in the f2 generation?
9:3:3:1
What Mendelian concept refers to one allele being more dominant than the other?
Concept of Dominance
What is a characteristic?
An attribute or feature possessed by an organism.
Homologous pairs separate in what phase?
Anaphase 1
How many squares are in a punnet square for a dihybrid cross?
16
What concept introduces the idea that only one allele goes into each gamete?
Principle of Segregation