If TT x tt pollination, the combinations of factors there will be in F1 generation are Tt.
What crossing?When chromosomes of the same type are paired together during meiosis, a biological event called crossing over takes place.
Parts of the chromosome can be exchanged when two chromosomes, one from the mother and one from the father, line up. The same genes may be present on the two chromosomes in different versions.
A hybrid chromosome with a distinctive genetic material pattern is the end outcome.
Therefore, the combinations of variables that will be present in an F1 generation if TT x tt pollination occurs is Tt.
To learn more about crossing, refer to the link:
https://brainly.com/question/19671756
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