Mendel proposed -
A. dominance
B. segreation
C. inomplete dominance
D. Independent assortment

Options

A. A,C,D
B. A,B,D
C. B,C,D
D. A,B,C

Answer

To answer the question regarding what Mendel proposed, we will analyze each option provided:

1. **Dominance**: Mendel proposed the concept of dominance, which states that in a heterozygous condition, one allele can mask the expression of another allele. This is known as the law of dominance.

2. **Segregation**: Mendel also proposed the law of segregation, which states that during the formation of gametes, the two alleles for a trait separate from each other. This means that each gamete carries only one allele for each gene.

3. **Incomplete dominance**: This concept refers to a situation where the phenotype of the heterozygote is intermediate between the phenotypes of the two homozygotes. However, Mendel did not propose this concept; it was later discovered.

4. **Independent assortment**: Mendel proposed the law of independent assortment, which states that alleles for different traits are distributed to gametes independently of one another. This means the inheritance of one trait will not affect the inheritance of another trait.

Based on this analysis, the correct options that Mendel proposed are:
- A. Dominance
- B. Segregation
- D. Independent Assortment

Thus, the answer to the question is A, B, and D.