I don’t know if this is a question but yes a controlled experiment allows you to isolate and test the hypothesis
Answer - They take in C02 (Carbon Dioxide) & Release O2 (Oxygen)
Reasoning - To be able to do Photosynthesis they Plants need C02 which is one of the important components to making Glucose. During that gas exchange they release O2 for C02.
Answer: Of 125 students with hitchhiker's thumbs, 1/3rd would be homozygous dominant (41 students)
HH homozygous dominant
Hh heterozygous dominant
hH heterozygous dominant
hh homozygous recessive
1. RNA polymerase unzips DNA
2. Free RNA nucleotides pair with complementary DNA nucleotides
3. The mRNA molecule breaks away as the DNA strands rejoin.
Hope this helps!