The diagram below shows part of the process of DNA transcription. Which
mRNA base will go in location 3?
A. Uracil
B. Thymine
C. Cytosine
D. Adenine

Legumes, a type of plant, require rhizobia, a type of soil bacteria, to survive since these organisms fix nitrogen during photosynthesis. rhizobia use the legumes for food. what would most likely happen to the legume population if rhizobia suddenly became extinct?

Suppose you have monohybrid pea plants in your garden and find that they produce round seed to wrinkled seeds in the ratio of 3: 1. if the allele are designated (r & r) receptively. what is the probable genotypes of the round seeds which produced f 1 ? rr & rr rr only rr & rr rr only rr only

Other than earth, is also known to have magnetic pole reversal? a: venus b: mars c: earths moon d: the sun