I believe it's true, sorry if it's not. I just can't find any research to prove if my answer is correct or not.
Answer:
The concepts of gene therapy arose initially during the 1960s and early 1970s whilst the development of genetically marked cells lines and the clarification of mechanisms of cell transformation by the papaovaviruses polyoma and SV40 was in progress.
Explanation:
If we name the gene for sunflower height with A, then the genotypes tall sunflowers are Aa (heterozygous), AA (dominant homozygous) and for short ones aa (recessive homozygous).
If we name the gene for flower color with B, than the genotypes for yellow color are BB (dominant homozygous) and Bb (heterozygous) and for orange color bb (recessive homozygous). A cross between heterozygous for both traits and heterozygous for hybrid homozygous dominant for flower color:
P: AaBb x AaBB
Horizontal and vertical Speed are indirect towards each other and therefore the earth moves. This causes it to be in constant new positions, causing seasons.
Most probably these scientists will do more studies and experiments in order to learn more about the subject. For example, if they compare plastic grocery bag with paper grocery bag it is important to investigate which one is a better resource use in the life cycles, which one is better for manufacturing or whether one of them can be reused. There are many questions about this issue.