Table of Contents
- 1 What will be the amount of DNA in pollen grain if its mother cell has 32 picogram DNA in G2 phase?
- 2 What will be the number of chromosome and DNA amount in pollen mother cell of G2 phase?
- 3 What will be DNA amount in meiotic II products if DNA is 20 picogram in Meiocyte at G2?
- 4 What will be the amount of DNA in meiosis 2 products?
- 5 What will be the amount of DNA in meiosis 2 products if meiocyte contains 40 pg DNA in G1 phase?
- 6 What is the quantity of DNA in telophase if G2 has 40pg DNA?
- 7 What is the amount of DNA in haploid pollen grain?
- 8 How many picograms of DNA are present in the mother cell?
What will be the amount of DNA in pollen grain if its mother cell has 32 picogram DNA in G2 phase?
8 picogram DNA is present in pollen grains .
What will be the number of chromosome and DNA amount in pollen mother cell of G2 phase?
Question | What will be the amount of DNA in a pollen grain if its mother cell has 32 picogram DNA in G2 phase? |
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Chapter Name | Cell Cycle And Cell Division |
Subject | Biology (more Questions) |
Class | 12th |
Type of Answer | Video, Text & Image |
How many chromosome will be present in each pollen grain if pollen mother cell has 20 chromosome in G2 phase?
If the amount of DNA is 20pg and number of chromosomes is 16 in pollen grain, then amount of DNA and number of chromosomes in MMC will be 80pg and 32 chromosomes respectively in G2 phase.
What will be the amount of DNA in vegetative cell of pollen grain?
This cell is contained within the cytoplasm of the vegetative cell. In roses, the generative nuclei in mature pollen contains a 2n DNA amount whereas the vegetative cell contains only a 1n DNA amount. This means that, even if the second pollen mitosis (pollen mitosis II) occurs in the pollen tube (Fig.
What will be DNA amount in meiotic II products if DNA is 20 picogram in Meiocyte at G2?
Answer: The amount of DNA in meiosis II products would be 10 pg. The content of DNA usually doubles during the S phase of the cell cycle. So, it would increase up to 40 pg after S phase of meiocyte.
What will be the amount of DNA in meiosis 2 products?
Both the cells undergo further division to form 4 haploid cells during the process of meiosis II. That means the content is further reduced to half i.e 15 pg DNA in each cell(M II). So, the correct answer is option C, 15pg.
What will be the chromosome number and DNA amount?
We use “c” to represent the DNA content in a cell, and “n” to represent the number of complete sets of chromosomes. In a gamete (i.e. sperm or egg), the amount of DNA is 1c, and the number of chromosomes is 1n. Upon fertilization, both the DNA content and the number of chromosomes doubles to 2c and 2n, respectively.
What will be the DNA content of the cell at G1?
At G1 phase the DNA content of the cell is 2C. at S phase the DNA content doubles and the result is 4C. at G2 phase it remains the same.
What will be the amount of DNA in meiosis 2 products if meiocyte contains 40 pg DNA in G1 phase?
Explanation: In the first phase of the meiosis if the meiocyte contains 30pg DNA then it will be doubled in the first phase and then it will be 60pg DNA after phase. When it enters the second meiosis II then it will be divided into 4 daughter cells then 60/4=15 pg.
What is the quantity of DNA in telophase if G2 has 40pg DNA?
After G2 phase, the cell under goes meiosis I that produces two daughter cells with chromosome number and DNA content reduced to half. Thus, each of the two new cells will have chromosome number = n = 10 chromosomes and DNA content = 2C= 40 picogram.
What is amount of DNA in meiosis?
After meiosis, I, DNA content (60 pg) is equally divided into two cells i.e. 30 pg in each cell. Both the cells further divide to form four haploid cells during meiosis II so that the DNA content (30 pg per cell) is further reduced by half i.e. 15 pg DNA in each cell (meiosis II products).
What will be the amount of DNA in meiosis 2 products if your site contains 36 pg DNA in G1 phase?
In G1 phase, 30 pg of DNA is present. Next comes, S phase in which DNA replicates and the amount of DNA becomes double, that is 60 pg. Now in meiosis-I, the amount of DNA becomes half and in meiosis-II, it remains same. Thus, the amount of DNA present after meiosis-II in products will be 30 pg.
What is the amount of DNA in haploid pollen grain?
The mother cell which forms the pollen grain is diploid and undergo meiosis to produce haploid pollen grains. So, if the diploid mother cell has originally 16 picogram of DNA, the amount of DNA in haploid pollen grain would be equal to half of 16 i.e. 8 picogram.
How many picograms of DNA are present in the mother cell?
So, if the mother cell has 32 picogram DNA in G 2 , this means originally the cell has 16 picogram of DNA. The mother cell which forms the pollen grain is diploid and undergo meiosis to produce haploid pollen grains.
How many picograms of DNA are there in a G2 cell?
In S phase synthesis of DNA occurs. The amount of DNA doubles but the chromosome number or diploid content of the cell remains the same. So, if the mother cell has 32 picogram DNA in G 2 , this means originally the cell has 16 picogram of DNA.
How many chromosomes are present in microspore mother cell?
If pollen grain has 8 chromosomes. Microspore mother cell has double the number= 2×8 = 16 chromosomes. So the correct option is ’20pg ; 16 chromosomes’. Was this answer helpful?