PP X ww or Pw X ww
Because all Purple flower plants are dominant and express the color purple. This can be seen in a homozygous cross, or a heterozygous cross, ( shown above ) White plants, to breed true, must be in homozygous condition.
Ture
All the offspring were purple because Mendel was dealing with simple genetic dominance. The purple true breeding parent was homozygous dominant and the true breeding white parent was homozygous recessive. When those two are crossed they create only heterozygous offspring (look up a punnett) and since this is simple dominance those heterozygous will show the phenotype of the dominant allele which is purple.
Codominance is a condition where heterozyous alleles at the same site produce and intermediate result. Ex. Red flowered plant crossed with White flowered plant yields 100% Pink flowered offspring. Ex. White Shorthorn cow crossed with Red Shorthorn yields 100% roan offspring.
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Homozygous for tall is TT Homozygous for short is tt All F1 offspring from this cross are Tt which makes them genotypically heterozygous and phenotypically tall.
Ture
All the offspring were purple because Mendel was dealing with simple genetic dominance. The purple true breeding parent was homozygous dominant and the true breeding white parent was homozygous recessive. When those two are crossed they create only heterozygous offspring (look up a punnett) and since this is simple dominance those heterozygous will show the phenotype of the dominant allele which is purple.
Codominance is a condition where heterozyous alleles at the same site produce and intermediate result. Ex. Red flowered plant crossed with White flowered plant yields 100% Pink flowered offspring. Ex. White Shorthorn cow crossed with Red Shorthorn yields 100% roan offspring.
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because it helped Mendel discover which plants would be crossed to produce offspring.
When two true-breeding plants are crossed, only one result is possible.
If two true-breeding pea plants are crossed their offspring will show the dominant trait. The flowers will be purple or light purple.
because it helped Mendel discover which plants would be crossed to produce offspring.
Homozygous for tall is TT Homozygous for short is tt All F1 offspring from this cross are Tt which makes them genotypically heterozygous and phenotypically tall.
first-generation plants
Dominant
Dominant