Daughter cells in meiosis usually have half the number of chromosomes of their parents.
<h3>Chromosome number in meiosis</h3>
Meiosis is called reductional division for a reason. It is because the number of chromosomes of the parent cell is usually halved in the daughter cells.
For example, if a cell with 46 chromosomes undergoes meiosis to produce four daughter cells. Each of the daughter cells will have 23 chromosomes.
This is unlike mitosis in which daughter cells have the same number of chromosomes as their parents.
More on meiosis can be found here: brainly.com/question/11622266
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Answer:
The false statement is
D. Genetic disorders cannot be caused by changes in just one individual gene.
Explanation:
Genetic disorders are caused by changes in DNA sequence due to mutation which will result in protein alteration which causes different disorders
Not only in gene, a change in single nucleotide or deletion of single nucleotide in the DNA sequence can cause a genetic disorder.
Answer:
A new born baby can turn blue when there is not enough oxygen rich blood in his body
Explanation:
TGV - Transposition of the great arteries is a defective heart condition that occurs from birth. The two great arteries are the aorta and pulmonary artery. The aorta carries oxygen-rich blood from the heart to the rest of the body while the pulmonary artery carries oxygen deficient blood from the body to the lungs
Normally the aorta which is supposed to be connected to the left ventricle and supply oxygen rich blood from the heart to the rest of the body is transposed. Meaning that it is instead connected to the right ventricle and carries oxygen-deficient blood to the body.
Conversely in TGV situation, the pulmonary artery is connected to the left ventricle (instead of the right ventricle) and carries oxygen rich (instead of oxygen-deficient) blood to the lungs.
The result is that the new born baby body has oxygen deficient blood and hence begins to burn blue (cyanotic)
Aquatic: external fertilization
terrestrial: internal f.