Answer:
While exercising, the muscles need additional energy as the breathing rate and volume of each breath increase to bring more oxygen into the body and remove the carbon dioxide produced. If insufficient oxygen is available to the muscles, for instance, the exercise is vigorous and/or prolonged, the heart and lungs are unable to supply sufficient oxygen. Muscles begin to respire anaerobically. Lactic acid is produced from glucose, instead of carbon dioxide and water. Muscles continue to contract, but less efficiently. When a period of exercise is over, lactic acid must be removed, because the body's tolerance to lactic acid is limited. These processes require oxygen. This is why, when the period of activity is over, a person’s breathing rate and heart rate do not return to normal straight away.
Explanation:
Answer AND Explanation:
In man, codominance is seen in the inheritance of the ABO blood group alleles. the trait is controlled by more than two alleles for the same gene within a population. Such alleles are called multiple alleles and they occupy the same locus on homologous chromosomes.
Sickle cell anaemia is a disease of the humans which is inherited in an incomplete dominance way. The disease is transmitted through a recessive gene that leads to the synthesis of abnormal haemoglobin. In sickle cell anemia patients, haemoglobin A is entirely replaced by a different type called haemoglobin S.
Answer:
The correct answer is haploid cells.
Explanation:
A kind of cell differentiation in which the number of chromosomes present in the cell of the parent gets reduced by half and gives rise to four gamete cells is known as meiosis. During sexual reproduction, the process of meiosis is used to generate gametes in the form of sperm and egg cells.
The process of meiosis generally begins in the diploid parent cell, that is, the cell exhibiting two chromosomes copies. In the process, the parent cell goes through the process of replication of DNA, which is followed by two distinguished nuclear division cycles. In the process, the diploid cell, eventually gives rise to haploid daughter cells, which are four in number, showing that each comprising half of the number of chromosomes found in the parent cell, which was diploid.
Answer would be D)<span>all of these</span>