What is the pattern of inheritance for polygenic trait?  

The correct answer is Non-Mendelian inheritance pattern

Explanation:

• Polygenic traits are traits controlled by multiple genes, often located on different chromosomes. These genes collectively contribute to the phenotype, and their effects are additive.
• Unlike single-gene traits studied by Mendel, polygenic traits do not follow simple dominant-recessive inheritance. Instead, they exhibit a Non-Mendelian inheritance pattern.
• Examples of polygenic traits include skin color, height, eye color, and weight in humans. These traits show a continuous range of variation rather than discrete categories.
• Environmental factors also play a significant role in the expression of polygenic traits.
• Polygenic traits are inherited in a manner that does not conform to Mendel’s laws of inheritance. The phenotypes result from the interaction of multiple genes, each with a small, cumulative effect.

Other Options:

• Mendelian inheritance pattern: This applies to single-gene traits where one gene determines the phenotype, with clear dominant and recessive alleles. Polygenic traits do not follow this pattern, as they are influenced by multiple genes and exhibit a range of phenotypes.
• Autosomal dominant pattern: In this inheritance pattern, a single copy of a dominant allele on an autosome is sufficient to express the trait. 
• X-linked recessive inheritance pattern: This pattern refers to traits caused by recessive alleles on the X chromosome. These traits are often seen more in males due to their single X chromosome.