Blue dominates white, crossed blue flower and white. Identify 1st generation hybrids.
March 28, 2021 | education
| Given:
A – blue flower;
a – white flower.
Define F1.
Decision:
If a blue flower is heterozygous (i.e., contains different alleles of the same gene), then we denote it Aa. A white flower is a recessive trait, denoted by aa.
F1 Aa x aa
/ \
Aa Aa aa aa
This gives 50% blue Aa flowers and 50% white aa flowers.
If the blue flower is homozygous, then we denote it AA. When crossing it with a white flower in the first generation, we get the following:
F1 AA x aa
/ \
Aa Aa Aa Aa
All 100% of the first generation hybrids will have blue flowers.
Answer: 1) 50% blue flowers, 50% white flowers (if the blue flower is heterozygous).
2) 100% blue flowers (if the blue flower is homozygous).
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