Answer:
Thymus gland
Explanation:
it is active during puberty mostly and after slowly shrinks
Answer:
a) Natural selection may lead to the evolution of prezygotic reproductive isolation in organisms that already have postzygotic isolation to prevent wasted reproductive effort
Explanation:
Prezygotic reproductive isolation produces postzygotic reproductive isolation because this mechanism lead to genetic differences that impair the pairing of homologous chromosomes during meiosis.
two hydrogen bonds are formed between adenine and thymine
Answer:
There is a smaller chance of mutation.
Explanation: