Question

Which is the complementary mRNA strand from the following DNA template?
TTC AGC
(1 point)
• CCU GAU
AAG TCG
• CCT GAT
AAG UCG

In pea plants, tall plants (T) are dominant over short plants (t). If a heterozygous tall pea plant is crossed with a homozygous recessive short pea plant, what percentage of the offspring is expected to be tall?
(1 point)
• 25%
• 0%
75%
• 50%

Answer 1

1) AAG UCG — mRNA is complementary to the DNA template (T→A, A→U, C↔G).
2) 50% — cross Tt × tt gives genotypes Tt and tt in a 1:1 ratio, so half the offspring are tall.