1. May be due to a mutation in the allele coding for white colour, which results in an allele coding for yellow colour in the flowers.
2. The original white flower that was isolated may have been heterozygous, Ww, where W codes for the white pigment in flowers, and W is dominant to w. The crossing of Ww × Ww will give offspring with genotypes of WW, Ww, Ww, ww, genotypic ratio of 1:2:1, and phenotypic ratio of 3 white :1 yellow. The offspring with the yellow flowers has a genotype of ww, homozygous recessive.
Hope this helps! :)
Answer: <span>aquatic animals
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External fertilization is the kind of fertilization that happens outside the female body. The female will put the unfertilized egg outside and the male will eject the sperm later.
This will cause the sperm have to mobilize further to the egg than internal fertilization. That makes this method only viable in water or highly moist area.
the time it took for the water to drain through (i think)
Fox, squirrel, and grasshopper.
If wrong I’m sorry