Question

which of the following did gregor mendel know about? chromosomes segregate traits can mask other traits alleles assort independently genes have specific loci

Explanation:

Gregor Mendel's work on pea plants led him to observe that some traits (dominant) can mask the expression of other traits (recessive). The concepts of chromosomes segregating, alleles assorting independently (in the modern sense with alleles), and genes having specific loci were discovered later, after Mendel's time, with the development of modern genetics and cytology. Mendel knew about the masking of traits through his experiments on dominant and recessive traits.

Answer:

Traits can mask other traits