Complete dominance

Question 1

complete dominance

Answer 1

• crossing short and small achieved this
• characteristic expressed in the phenotype of a heterozygous organism (dominant allele)
• dominant and recessive put together, only dominant is phenotype
• homozygous and heterozygous phenotype are the same
• recessive allele will be expressed when it is homozygous

Question 2

Mendel’s law of segregation

Answer 2

• during meiosis, allele pairs separate so gametes have a single allele for each characteristic

Question 3

Mendel’s law of dominance

Answer 3

• if parents are pure and contrasting traits, only dominant is phenotype
• recessive will always be masked

Question 4

Mendel’s law of independent assortment

Answer 4

• alleles of different genes segregate randomly and independently
• during gamete formation

Question 5

test cross

Answer 5

• to tell if organism is heterozygous or homozygous
• only way to find is to cross dominant organism several times with an individual showing recessive phenotype
• all offspring dominant, homozygous
• some recessive offspring, heterozygous