Are the cells in a pollen tetrad haploid and ? Are these cells genetically identical or...

Are the cells in a pollen tetrad haploid and ? Are these cells genetically identical or are they all different? ___________ Explain your answers.

Solutions

Expert Solution

ANS . Yes the cells in a pollen tetrad are haploid because they are formed by meiotic division of pollen mother cell which are genetically identical

stamen is the male reproductive unit and consist of two parts

1. A long and slender stalk called filament

2. A biiobed terminal structure called anther

Anther - it has 2 lobes and each lobe consists of 2 theca separated by a septum

it is tetragonal structure consist of 4 microsporangia , 2 in each of the lobe .

microsporangia develops furthur and develops into pollen sac.

centre of each microsporangium is filled with similar cells called sporogenous cells.

at maturity pollen sac is formed by fusion of two microsporangium in each lobe .

microsporogenesis - process of formation of microspore from pollen mother cell (PMC) by meiosis .

PMC undergoes meiotic divisions to form cluster of 4 cells called microspore tetrad.

on maturity the anther dehydrates and microspores separate from each other to form pollen grains .

gladiator answered 1 year ago

Next > < Previous

Related Solutions

After completion of mitosis in a human cell, the result is a. genetically identical haploid somatic...

After completion of mitosis in a human cell, the result is a. genetically identical haploid somatic cells b. genetically unique diploid somatic cells c. genetically identical diploid gamete cells d. genetically unique haploid gamete cells e. genetically identical diploid somatic cells

1. Explain the genome present in diploid cells and in haploid cells.

1. Explain the genome present in diploid cells and in haploid cells. 2. Explain the purpose of mitosis in sexually reproducing organisms (example: your body cells). 3. Explain the purpose of meiosis in sexually reproducing organisms (example: specific cells in your body).

What are haploid and diploid cells? Explain them breifly.

You're studying a eukaryotic species with a haploid number of 7. The somatic cells in this...

You're studying a eukaryotic species with a haploid number of 7. The somatic cells in this species each contain a total of 1.8 billion base pairs of DNA, or approximately a total mass of 1.8 picograms (DNA weighs approximately 1 pg/ 1 Gbp) a. You are observing cells of this species undergoing meiosis utilizing a special microscopy technique that allows you to estimate the mass of DNA in the nucleus. All of the cells you are currently observing are undergoing...

Haploid cells: Are representative of all cells in body Occur during mitosis Occur during meiosis Possess...

Haploid cells: Are representative of all cells in body Occur during mitosis Occur during meiosis Possess paired chromosomes Disease hemophilia results from: Dominant gene on X chromosome in males Recessive gene on Y chromosome in males Recessive gene on X chromosome in males Dominant gene on Y chromosome The human genome consists of: DNA, most of which encodes for proteins DNA, most of which does not encode for proteins Proteins, which encodes DNA RNA, most of which does not encode...

1. Is the genetic information in the two sister chromatids of the duplicated chromosome genetically identical...

1. Is the genetic information in the two sister chromatids of the duplicated chromosome genetically identical or different? 2. Are the two cells at the end of mitosis diploid or haploid? 3. Are the four cells at the end of meiosis diploid or haploid? 4. Are daughter cells are genetically identical to each other? 5. Are daughter cells are genetically identical the original parental cell?

Question 71 Both oogenesis and spermiogenesis: Select one: a. create haploid cells b. create 4 cells...

Question 71 Both oogenesis and spermiogenesis: Select one: a. create haploid cells b. create 4 cells that can each be used in fertilization c. unevenly divide cytoplasm during the meiotic cell division d. are focused on creating a high quantity of sex cells, regardless of quality Question 72 At puberty, levels of ___________ increase, causing ___________. Select one: a. testosterone; spermiogenesis b. estrogen; menstruation c. LH; hair growth to slow down d. FSH; the childhood growth spurt to stop e....

A cat germ cell has a haploid number of 19 chromosomes.1) Number of cells in...

A cat germ cell has a haploid number of 19 chromosomes. 1) Number of cells in prophase 1 and telophase 1 of meiosis 2) Number of chromatids in prophase 1 and telophase 1 of meiosis 3) Number of chromosomes in prophase 1 and telophase 1 of meiosis

The processes of angiosperm pollination results in haploid, diploid, and triploid cells. Explain how this is possible....

The processes of angiosperm pollination results in haploid, diploid, and triploid cells. Explain how this is possible. Coevolution occurs when two species interact in such a way that mutually increases each other’s individual reproductive fitness. This is clearly evident by the relationship between insect pollinators and angiosperms. Explain why the reproductive fitness of insects is increased when they visit flowers, and why the reproductive fitness of flowering plants is increased by rewarding insects with nectar.

During Mitosis is it possible for the daughter cells to become genetically different from the parent...

During Mitosis is it possible for the daughter cells to become genetically different from the parent cell (ignoring mutations)? If so how? If evolution is based upon there being genetic diversity between Generations, how does the lack of genetic differences existing between daughter cells created via mitosis impact the theory of evolution. (Answer this question again ignoring mutations)

Subjects