Answer:
The chance of a normal couple having a child with down syndrome is 1 to 600 births.
Explanation:
Down syndrome is a genetic flaw that occurs when the fetus is being formed.
A human cell considered normal has 46 chromosomes, divided into 23 pairs. For some unknown reason, an error may occur at the beginning of embryonic development and an extra chromosome is created, which binds to par 21. The result is cells with 47 chromosomes. This causes the said syndrome.
It is important to know that this failure happens at random. It is nobody's responsibility. It has not been proven to date that lifestyle, actions during pregnancy, smoking, drinking, medicines, environmental factors or kinship between the couple can influence this occurrence. She is not contagious either. The likelihood of a normal couple having a child with the syndrome is approximately 1 to 600 births.
The solution of nutrients and organelles is called CYTOPLASM.
The cytoplasm of a cell is made up of all the organelles that are located outside of the nucleus which are enclosed within the cell membrane of a cell. The cytoplasm is a colorless, clear, jelly like substance whose constituent is majorly water [80%]. It also contains enzymes, salts, organelles and various organic molecules.
Answer:
C.
Explanation:
Every DNA nucleotide pair will consist of one pyrimidine and one purine. Due to the chemical structures of the different bases, adenine (A) will always bind with thymine (T) and guanine (G) will bind with cytosine (C). The same is true for RNA except that A always pairs with a close relative of thymine, uracil (U).
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For those actually in relationships, shyness was negatively associated with intimacy satisfaction. Shyness was also positively associated with insecure romantic attachments, including greater attachment anxiety and attachment avoidance. For males especially, shyness also had a negative relationship with overall psychological well-being.
