Meiosis is referred to as reduction division as it divides the chromosome number in half. Crossing over or recombination is the main reason of shuffled genes and increased genetic variation in gametes in meiotic cell division as the homologous pairs are paired up during prophase.
<h3>What is crossing over?</h3>
Crossing over is referred to as the exchange of genes of DNA between paired homologous chromosomes. It actually occurs during the development of egg and sperm cells i.e., during meiosis.
It is an enzyme-mediated step, in which the exchange of genetic material takes place between non-sister chromatids of homologous chromosomes.
It actually occurs at the pachytene stage of prophase I of meiosis cell division.
Thus, it can be concluded that the crossing over is the main reason of shuffled genes and increased genetic variation.
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Fraternal twins are not genetically identical because one chromosome from each pair randomly passes during meiosis and leads to differences between the siblings. Meiosis involves independent segregation of sex chromosomes.
Meiosis is a type of reductional cell division by which a parent cell produces four daughter (gametes) cells having half the genetic material.
Fraternal twins occur when two egg cells are released by the mother, which are fertilized by a different sperm.
During meiosis, sex chromosomes are separated and segregate in a random manner in daughter (sex) cells.
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Cytokinesis is when the cytoplasm of the cell divides, and it occurs during telophase and after the division of the nucleus. Interphase, which is when the cell grows and copies its genetic material, precedes mitosis.
Answer:
Hawk will get 5 calories which is 10% of 50 calories.
Explanation:
producers are self feeders that make their own food by the help of the process known as photosynthesis.
The energy from the producers are transferred from producers to consumers when they eat them. All the energy from the producers are not transferred to consumers.
So, only 10% of the energy are transferred from the previous level to another level. If the rabbit is having 500 calories then the snake will have 50 calories( 10% of 500)
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