Identification and location of genes on chromosomes that might affect cholesterol metabolism has been difficult because many of the genes that affect this trait interact, a phenomenon that is called epistasis. t or f?

True, the identification and location of genes and their effect has been difficult because of the phenomenon of epistasis.

Explanation:

Epistasis happens when the effect of a gene (locus) depends on one or more genes being present, that is. When epistatic mutations occur, they have different effects when they are in combination with when they are not. It occurs due to interactions between or within genes, which leads to unpredictable effects.

1: most common garden plants prefer loam — soils with a balance of different-sized mineral particles (approximately 40% sand, 40% silt, and 20% clay) with ample organic matter and pore space. however, some plants grow better in sandy soils, while others are well-adapted to clay soils.

2: available water capacity is the maximum amount of plant available water a soil can provide. it is an indicator of a soil's ability to retain water and make it sufficiently available for plant use. available water capacity is the water held in soil between its field capacity and permanent wilting point.

3: it is the same for all living things (plants and animals). it also includes very tiny organisms that our eyes cannot see. they are known as microorganisms, and include viruses, bacteria and fungi.