Enzymes can be best described as catalysts in living systems. This is because enzymes accelerate chemical reactions without being used up in the process.
Origins of life number 4 is living beings
That is a HYPOTHESES because it says "May Cause"
Answer:
Because the F1 plants all had a lowercase a/short plant allele, there was a 25% chance that two plants would contribute it to their offspring and they both did sometimes to make a aa offpsring.
Explanation:
All the F1 plants were heterozygous, so when they were crossed, the resulting genotypic ratio was 1 AA : 2 Aa : 1 aa. As you can see, this is the first time since the parent generation that there is a aa genotype and short plant phenotype, so that's why short plants reappeared.
