cells in the vegetal half of the embryo should be unpigmented those in the animal half and there should be heavily pigmented.
Explanation:
The Yolk molecules moving in the vegetal halves of the egg which is the case in most of the animals, slows down the cell division. These lesser division area or the zone demarcates the area to be vegetal pole and due to lesser cell division, it becomes unpigmented or less pigmented Based on the observation time and perspect with assuming no movement.
The pole opposite to the vegetal, is animal pole which with absence or less of yolk, gets more ability to divide and hence become more pigmented or heavily pigmented. This brings polarity to the egg and becomes telolecithal egg.
Answer:
Because photosynthesis is a source of oxygen, it seems intuitive that photosynthesis evolved first: once enough O2 was in the air, then respiration would be able to arise in the newly oxygen-enriched atmosphere. However, some biologists have argued since the 1970's that respiration in fact evolved first.
Answer:
The genotype frequency refers to the percentage of individuals in a population with that genotype.
For example, of the frequency of genotype CC is 0.01, that is, 1 percent of the population has the genotype CC.
The total population size is 110.
Thus, the number of dogs with genotype CC would be = 0.01 of 110 ≈ 1
Similarly, number of dogs with genotype Cc would be = 0.18 of 110 ≈ 20
The number of dogs with genotype cc would be = 081 of 110 ≈ 89
the third one that says
evolution of populations over time
I think it’s A (low water content foods)
