crossing over and random orientation of homologous pairs.
Explanation:
Two factors during meiosis I :
Chromosomal crossover in meiosis prophase I. The DNA is broken on each homologue and reconnected in a criss-cross pattern so that homologues exchange part of their DNA. This process is called crossing over.
Random orientation of homologous pairs in meiosis metaphase I. When the homologous pairs line up, the orientation of each pair is random.
This allows for the formation of gametes with different sets of homologues.
crossing over and random orientation of homologous pairs.
Explanation:
Two factors during meiosis I :
Chromosomal crossover in meiosis prophase I. The DNA is broken on each homologue and reconnected in a criss-cross pattern so that homologues exchange part of their DNA. This process is called crossing over.
Random orientation of homologous pairs in meiosis metaphase I. When the homologous pairs line up, the orientation of each pair is random.
This allows for the formation of gametes with different sets of homologues.
1) Four daughter cells are produced in the process of meiosis.
2) Genetic makeup and environmental condition are the factors that contribute to the variety of traits amongst family members.
3) Down syndrome is a type of disorder in which one extra copy of chromosome is present in the daughter cell while turner syndrome is a type of disorder in which one chromosome is absent in the daughter cell.
1) Four daughter cells are produced in the process of meiosis.
2) Genetic makeup and environmental condition are the factors that contribute to the variety of traits amongst family members.
3) Down syndrome is a type of disorder in which one extra copy of chromosome is present in the daughter cell while turner syndrome is a type of disorder in which one chromosome is absent in the daughter cell.
Genetic diversity may be defined as the number of total genetic characteristics of a species. Genetic diversity helps the population to adapt in the changing environment. Crossing over provides a source of genetic diversity.
Crossing over is the process of exchange of genetic material during the process of meiosis. Thus, crossing over increases the variation of genetic characteristic in the haploid gamete cells.
Genetic diversity may be defined as the number of total genetic characteristics of a species. Genetic diversity helps the population to adapt in the changing environment. Crossing over provides a source of genetic diversity.
Crossing over is the process of exchange of genetic material during the process of meiosis. Thus, crossing over increases the variation of genetic characteristic in the haploid gamete cells.
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