Question

In: Biology

Why is meiosis necessary for sexually reproducing organisms? How many chromosomes are in a human zygote?...

Why is meiosis necessary for sexually reproducing organisms? How many chromosomes are in a human zygote? Relate the two answers

Solutions

Expert Solution

Meiosis is necessory for the sexual reproducing organisms because during meiosis chromosome become half

to maintain the race . This process is required 46 number of chromosomes in human.

  1. human zygote have 46 chromosomes
  2. these two above fact are related to each other as: if the meiosis not occur in the cell if zygote don't have 46 chromosomes. so for fertilization 46 chromosomes are required.

      46 X 46= 92( its not correct)

so to maintain human race

23 X 23 =46

so during meiosis it required half of chromosomes.


Related Solutions

Suppose that in some sexually-reproducing species the haploid number of chromosomes is 20. How many chromosomes...
Suppose that in some sexually-reproducing species the haploid number of chromosomes is 20. How many chromosomes would be ​found in a somatic cell? ​A) 20​​​​B) 10​​​C) 2​​​D) 40 Anatomically modern humans migrated out of Africa into neighboring continents. About when did this migration begin? ​A) 1,000 years ago ​B) 10,000 years ago ​C) 60 thousand years ago ​D) Several million years ago In one type of genetic therapy, healthy cells are introduced into diseased tissues. Which of the following is...
Meiosis is an important source of genetic variation in sexually reproducing organisms. Identify the events in...
Meiosis is an important source of genetic variation in sexually reproducing organisms. Identify the events in meiosis that result in segregation and independent assortment and how these two mechanisms produce genetic variation in the next generation. Use the following terms in your response: genes; alleles; homologous chromosomes; non-homologous chromosomes.
1. Explain the purpose of meiosis in sexually reproducing organisms and compare to the purpose of mitosis
 Section 7.2 | Meiosis 1. Explain the purpose of meiosis in sexually reproducing organisms and compare to the purpose of mitosis 2. Explain difference between meiosis I compared to meiosis II. 3. Describe the five phases of meiosis I: prophase I, Prometaphase I, Metaphase 1, Anaphase I, Telophase I
1. Identify and describe how meiosis helps contribute and lead to genetic variation in sexually reproducing organisms
1. Identify and describe how meiosis helps contribute and lead to genetic variation in sexually reproducing organisms2. Describe how meiosis accomplishes a reduction in chromosome number 3. Contrast the major differences between the daughter cells in meiosis and the daughter cells in mitosis [ fill in the chart below] 
A certain species of shrimp are sexually-reproducing, diploid organisms with 86 chromosomes per typical cell.
A certain species of shrimp are sexually-reproducing, diploid organisms with 86 chromosomes per typical cell. How many chromosomes would be in a cell from this species of shrimp that is: (In the interest of credit, please neatly show only the work pertaining to your final answer for each question in this area.) a) a triple nulisomic somatic cell? b) a single trisomic somatic cell? c) a double trisomic gamete?
Meiosis is the process of diploid germ cell division to produce haploid gametes in sexually reproducing organisms.
Meiosis is the process of diploid germ cell division to produce haploid gametes in sexually reproducing organisms. What aspect of chromosome behavior most clearly accounts for Mendel's law of segregation? What aspect of chromosome behavior most clearly accounts for Mendel's law of independent assortment? What other process greatly contributes to genetic diversity during meiosis, and at what stage of meiosis does this process occur? 
What are the sources of genetic variation in sexually-reproducing organisms? In asexually-reproducing organisms, such as viruses...
What are the sources of genetic variation in sexually-reproducing organisms? In asexually-reproducing organisms, such as viruses and prokaryotes?
how many chromosomes are in a cell during prophase I of meiosis? how many chromosomes are...
how many chromosomes are in a cell during prophase I of meiosis? how many chromosomes are in a cell during prophase of mitosis? are the chromosomes considered uncondensed at the end of telophase? where do tetrads come from? are they from your mom and dad? if so, how does that work since we’re preparing gametes to be fertilized which have not yet received the partners 23 chromosomes?
Explain the advantages and disadvantages of populations of sexually reproducing organisms over populations of asexually reproducing...
Explain the advantages and disadvantages of populations of sexually reproducing organisms over populations of asexually reproducing organisms. Also, include the following in your original post: • Address this from a molecular perspective as well as from a larger, environmental perspective. • Describe the two events that are common to all sexually reproducing organisms and how they fit into the different life cycles of those organisms. • Highlight three specific examples of reproduction from your text.
In sexually reproducing organisms, there are three main sources of genetic variation.
In sexually reproducing organisms, there are three main sources of genetic variation. Explain two of these sources and briefly describe what it is and how it leads to genetic variation. 
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT