LIFE SCIENCE

OBJECTIVE LIFE SCIENCE

DIVERSITY AMONG LIFE FORMS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What is the purpose of meiosis?
A
Meiosis allows the offspring produced during sexual reproduction to grow and develop.
B
Meiosis joins together the sex cells during sexual reproduction to produce new offspring.
C
Meiosis produces the sex cells that join to form new offspring during sexual reproduction.
D
Meiosis produces the body cells that join to form new offspring during sexual reproduction.
Explanation: 

Detailed explanation-1: -Meiosis is a type of cell division that reduces the number of chromosomes in the parent cell by half and produces four gamete cells. This process is required to produce egg and sperm cells for sexual reproduction.

Detailed explanation-2: -Therefore the purpose of meiosis is to produce gametes, the sperm and eggs, with half of the genetic complement of the parent cells. In the figures below, pink represents a genetic contribution from mom and blue represents a genetic contribution from dad.

Detailed explanation-3: -Gametes must be produced by meiosis for sexual reproduction because the numbers of chromosomes are reduced to half during meiosis and then the normal diploid numbers of chromosomes are regained during the process of fertilization.

Detailed explanation-4: -Mitosis and meiosis are both cell division processes that end in the development of new cells. As a result, they are both essential for the survival of sexually reproducing organisms. Mitosis replicates non-sex cells required for growth and development, while meiosis creates the cells required for sexual reproduction.

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