Monozygotic twins randy and rowdy have identical genes. they have many similarities, but what explains the differences in their height, weight, and behavior?

The monozygotic twins develop from the same fertilised egg. Hence the genetic composition or the make of both the twins are same. The differences in the height, weight, behaviour, and complexion of the twins exist not because of the underlying genetics but because of the environmental factors affecting the genes' activity.

The regulatory markers (chemical markers like the presence of methyl or acetyl group on the nucleotides) present on the identical genes present in both the twins differ. This is the epigenome of the twins. Epigenome is influenced by several external factors and affects the amount of gene products based on the regulatory markers over the gene.

d concave shape of wave rock

explanation:

the concave shape of wave rock is a very good evidence that supports the evolution of earth due to chemical weathering. if we talk about structure of   wave rock, studies have estimated that it is around 2.7 billion years old. it also serves as the foundation of evidence that it was the place where australian continent began to form.

how the structure of wave rock was created?

studies suggest that structure of wave rock was created when the surrounded area was started to weather due to which deposition of material started on the part of land which now contains wave rock.

the structure of wave rock is considered to be one of the best-known landforms in australia. at the height of around 15 cm, there can be found flared slopes which formulate the margins of hyden rock. it is now assumed by geologists that wave rock was created by subsurface water-induced weathering and not by glaciers, waves or wind.

due to deposition of material over the period of long time, the wave rock became tougher and tougher due to weathering from surrounding terrain. this makes it a physical evidence that supports   the evolution of earth due to chemical weathering.

hope it !