Let
• R = red
• r = white
• S = short stem
• s = long stem
Then two heterozygous (RrSs) parents can each contribute one of the following allele pairs:
RS, Rs, rS, rs
so that the genotypes of their offspring have the following distribution:
The probability of producing offspring with either the SS or Ss genotype is then 12/16 = 3/4.
In other words, there are 4² = 16 possible genotypes among the offspring, and each parent has a 1/2 probability of contributing the S allele. There are 2 cases to consider:
• both parents contribute the S allele with probability (1/2)² = 1/4
• one parent contributes the S allele while the other contributes the s allele, and this can happen in 2 ways with probability 2 × (1/2)² = 1/2
These events are mutually exclusive, so the total probability is 1/4 + 1/2 = 3/4.
Answer:
Breathing bromine gas could cause you to cough, have trouble breathing, get a headache, have irritation of your mucous membranes (inside your mouth, nose, etc.), be dizzy, or have watery eyes. Getting bromine liquid or gas on your skin could cause skin irritation and burns.
It is the largest importer but not the largest exporter.
Explanation:
China is the world's largest exporter.
The USA is the world's largest importer.