Answer:
A
Explanation:
The pulmonary artery carries de-oxygenated blood from the right ventricle of the heart to the lungs. It is the only artery that carries de-oxygenated blood. This blood is usually from the tissues and has a lot of carbon dioxide from the cellular respiration of cells around the body. The blood is pumped to the lungs to be oxygenated and the carbon dioxide expelled.
Answer:
Twins occur.
Explanation:
If the embryo is divided into half by artificial methods such as microsurgical, twins occur in the female body. Both the embryo are identical to each other. twins means that there will be two babies formed at the same time in the body of female. After the separation of embryo, both the embryos are genetically identical to each other and it continue to develop into a new organisms.
Answer:
A) 
%
B) 
%
Explanation:
A) Given
Frequency of individuals in the population having recessive phenotypes 
%
Frequency of individuals in the population having recessive phenotypes is represented by 
Thus frequency of recessive genes is equal to 
frequency of dominant genes is equal to
Now,
% of genes exist in the heterozygous condition
B.
Frequency of individuals in the population having recessive phenotypes 
%
Frequency of individuals in the population having recessive phenotypes is represented by
Thus frequency of recessive genes is equal to 
frequency of dominant genes is equal to
Now,
% of genes exist in the heterozygous condition
I don't know if this is what you're looking for but...
examples of abiotic factors in a marine ecosystem could be the water, oxygen in the water which helps the animals in the water breathe, and the sun that reflects into the water.
Answer:
True
Explanation:
"Theoretically, the genetic code is universal. This means that the same codon "means" the same amino acid in all organisms. For example, in both humans and bacteria, a codon made of three thymine DNA-letters will code for an amino acid called Phenylalanine."
