Answer:
Interphase
Explanation:
When a cell inst actively dividing, it is in a stage called interphase which is where a cell spends the majority of its time. During interphase, cells need to replicate their DNA so they have DNA to divide during mitosis.
The law of segregation occurs during meiosis when gamete are formed. At this time, the alleged for each gene segregate from one another. As a result, each gamete contains only one allele per gene.
Urea s a waste product that normally diffuse across the placenta from the embryo to the mother.
Answer:
This lack of fossil data is expected, because the fossil record is incomplete.
Explanation:
Fossilization is a slow, complex and extremely rare process that depends on several favorable conditions for the conservation of traces or materials left by an organism:
1 - Rapid burial of the material;
2 - Presence of rigid parts that are more resistant to degradation;
3 - The type of sediment should be thin and less prone to erosion.
4 - The environment in which the material is located should be low in oxygen to avoid degradation due to oxidation.
5 - The temperature of the place where the material is buried should preferably be cold because the action of decomposing microorganisms in these environments is much lower.
Therefore, it is very common and expected that the fossil record is incomplete.
Bottleneck is the term used to define chance changes in the frequency of alleles which have a significant effect on small populations. The effect is that the population is greatly reduced because of the change in the allele frequency. A genetic drift will follow which will expedite evolution.
