Answer:
Option (A).
Explanation:
Evolution may be defined as the change in the characteristics of a species over several generation with time. Natural selection acts as a main drivinf force for the evolution.
The drought of 1977 is responsible for the species evolution. The species is larger in this case (as mentioned in the question) and the species has deeper beaks over time. The birds have relatively large and deep beaks because they can easily crack the food.
Thus, the correct answer is option (A).
Inbreeding will increase the relatedness between individuals in a population. Interbreeding refers to reproduction with another species (or race), and is often used as synonym to crossbreeding or hybridization (when referring to hybrid offspring from two different species/races/breeds, not DNA hybridization).
D. The macronucleus does not disintegrate during conjugation.
The macronucleus contains the working copies of genes needed to support an enormous cell. It is formed by a division of the fused diploid nucleus after conjugation followed by multiple rounds of internal gene replication which does not occurs in the micronucleus.
Answer:The wall of the aorta is thicker than that of the inferior venacava; this is because the aorta is the artery that carries blood from the heart from the left ventricle to the whole body (except the lungs), while the superior and inferior venacava are the veins that carry blood from the body to the right atrium. hope this helps !:)
Explanation:
Answer:
(D) all of the above
Explanation:
The rough endoplasmic reticulum is part of the endoplasmic reticulum, the other one is known as the smoother endoplasmic reticulum.
1. This rough endoplasmic reticulum is considered rough because it has ribosomes bound to it.
2. Also, it is part of the membrane system found throughout the cell's cytoplasm, even though its density is considered to be higher in some places, such as near the nucleus.
3. It is also is connected to the nuclear envelope or membrane
Some of its functions include
1. It produces antibody in certain leukocytes
2. It produces insulin in pancreatic cells
Hence, in this case, the correct answer is Option D "all of the above."
