Organs of excretion make up the excretory system. They include the kidneys, large intestine, liver,and lungs. The kidneys filter blood and form urine. They are part of the urinary system, which also includes the ureters, bladder, and urethra.
1) copying genes
2) chemical mutagens
3) computers
4) enzymes
5) bacteria
Answer:
A. q 0.55
Explanation:
Frequency of genotye "BB" 

Frequency of genotye "bb" 

Frequency of genotye "Bb" 

Frequency of bb is represented as "
" as per Hardy Weinberg's principle.
Thus, frequency q of the recessive allele b is represented by

Hence, option A is correct.