Homologous structures provide evidence for common ancestry, while analogous structures show that similar selective pressures can produce similar adaptations (beneficial features).
Answer:
convergent evolution:
Explanation:
organisms which are not closely related may adapt similarly when exposed to similar environments, thus have similar structures.
Reproduce slowly. Rapid life history pattern means short life spans, reproduce early, and smaller body's.
Answer:
The correct answer is - the incorrect separation of this pair of sister chromatids during meiosis II.
Explanation:
Down syndrome is a type of aneuploidy in which the number of the chromosome is not as normal condition as it occurs by inheritance of an extra chromosome. This disorder is usually caused due to an error or in meiosis if the sister chromatids fail to separate during meiosis II in an embryo and leads to three copies of the chromosome instead of two.
This condition is lead to the down syndrome which is one of the most common trisomy case as it results an extra chromosome of chromosome 21.
Thus, the correct answer is - the incorrect separation of this pair of sister chromatids during meiosis II.
