Starting from the wild mustard Brassica oleracea, breeders have created the strains known as brussels sprouts, broccoli, kale, and cabbage. Which of the following statements is supported by this observation?

A) In this species, there is enough heritable variation to create a variety of features.
B) Natural selection has not occurred very frequently in the wild populations.
C) Heritable variation is low-otherwise the wild strain would have different characteristics.
D) In this species, most of the variation present is due to differences in soil, nutrition, amount of sunlight, or other aspects of the environment.

What do scientists need to look at before developing an argument

Recent research by marine biologists suggests that bottlenose dolphins have names for themselves. scientists played sounds they had identified as the names of particular dolphins, putting them through a synthesizer so that they did not sound like the voices of particular dolphins. the researchers found that dolphins would respond to the names of other dolphins that they were related to or associated with, but they ignored the names of strangers. this discovery suggests a much greater degree of self-awareness in aquatic mammals than was previously suspected. if this research holds up, what does it suggest about dolphins?

In tomato plants, mendel found that the allele for smooth seeds (s) is dominant, while the allele for wrinkled seeds (s) is recessive. which of these punnett squares shows crosses between two plants heterozygous for smooth seeds? i need this to be answered as soon as ! sry the picture is bad quality