Apea plant with yellow seeds is cross with a pea plant with green seeds. all of the off spring have yellow seeds. the allele for yellow seeds is
a) dominant because all the offspring have yellow seeds
b) recessive because all the offspring have yellow seeds
c) dominant because all the offspring inherited two alleles for yellow seeds
d)recessive because all the offspring inherited two alleles for yellow seeds

Which of the following observation darwin shape his concept of descent with modification? a) species diversity declines farther from the equator. b) fewer species live on islands than on the nearest continents. c) birds live on islands located farther from the mainland than the bird's maximum nonstop flight distance. d) south american temperate plants are more similar to the tropical plants of south america than to the temperate plants of europe. e) earthquakes reshape life by causing mass extinctions.