2) cell-tissue-organ-organ system
Answer:
The lack of Mad1 protein can cause faster cell division.
Explanation:
The Mad1 protein is responsible for regulating the fixation of chromosomes in spindle microtubules, during cell division. With the presence of this protein, anaphase is prevented from starting while the spindle, where the chromosomes attach, is formed.
Without this protein, this check is not done and cell division occurs faster, which is one of the reasons why cell division can be accelerated.
Confusion entered the chat
Answer:
Patau syndrome is the result of unique distribution of chromosomal pair of three in place of two.
Explanation:
A chromosomal disorder resulting in physical and intellectual disabilities of a child is widely known as Trisomy 13 or Patau syndrome. The symptoms include- defect in heart, abnor-mality in brain and spine, poor development of eyes, unusual number of fingers, a cleft lip or cleft palate and hypotonic or weakness in muscle.
The extra pair of chromosome, the pair of three, either in every cell or in few cells of the body is the main cause of this disease. However, it can also occur if the chromosomes are translocated.
Answer: phenylketonuria is caused by a deficiency of phenylalanine hydroxylase
Explanation: deficiency of Phenylalanine hydroxylase leads to inability of amino acid phenylalanine to be converted to amino acid Tyrosine. Deficiency of phenylalanine hydroxylase is caused by mutation in the genes that code for phenylalanine hydroxylase