Consider human gametogenesis for each of the followingquestions.

How many sperm cells will form from fifty primary spermatocytes?My answer is 415=60

How many sperm cells will form from fifty secondaryspermatocytes? 215=30

How many sperm cells will form from fifty spermatids? 15

How many eggs will form from fifty primary oocytes? 15

How many eggs will form from fifty secondary oocytes? 15

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Hubert KochLv2

29 Sep 2019

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Please help me answer these questions. Thank you

1	_______________ is a pattern of dispersion in ecology in whichindividuals are grouped in patches and is the most common patternof dispersion.
2	In the _________ growth model the growth is unregulated becauseof abundance of resources.
3	The competition between individuals of the same species for thelimited resources is called _____________.
4	Physiological or anatomical response that is longer term, thoughstill reversible is called _________.
5	Group of individuals of the same species living in a given areaat a given time.
6	A survivorship curve with mortality more constant over the lifespan.
7	True or False: Frogs practice internal fertilization.
8	In women, estrogen is produced by the ___________________.
9	An egg that has just exited the ovary in ovulation is a____________ oocyte and is ____________.
10	True or False: The urethra is the passage for both urine andsemen in males.
11	Sperm go from primary spermatocytes to secondary spermatocytesto sperm cells in the _____________.
12	Oogenesis produces ________ gametes from one undifferentiatedcell, while spermatogenesis produces _________ gametes from oneundifferentiated cell.
13	The surge of this hormone results in ovulation in the femaleovarian cycle.
14	____________ is the embryonic layer that develops into mosttissues and organs in an individual.
15	The name for

limewater-buffalo900

13. Meiosis differs from mitosis in that:
a. meiosis results in the production of two new cells, whilemitosis results in the production for four new
cells., b. meiosis is used for growth and repair, while mitosis isused for production of eggs and sperm., c.
cytokinesis can be unequal following meiosis, but is approximatelyequal following mitosis., d. meiosis
involves one cell division, while mitosis involves two celldivisions., e. meiosis results in the production of
diploid cells, while mitosis results in the production of haploidcells.
14. Bits of maternal and paternal chromosomes are exchanged betweenhomologous chromosomes during
synapsis of meiosis I. This process is called:
a. crossing over., b. random mating., c. random fertilization., d.random shuffling of parental
chromosomes.,
e. mutation.
15. The advantage of sexual reproduction over asexual reproductionis that:
a. all young are genetically identical to the parent., b. malesmust evolve a copulatory organ., c. genetic
variability in the population is increased., d. females must evolvea vagina., e. mates are not needed.
16. Many different types of information are used to constructphylogenetic trees. Which of the following types
of information is the most direct measure of evolutionaryrelatedness?
a. physiology, b. gene sequence data, c. the fossil record, d.information about the structure of ribosomes.,
e. information about the structure of enzymes
17. A species is:
a. a group of individuals that can interbreed under naturalconditions and produce fertile offspring., b.
denoted by both a genus and a species name., c. the onlybiologically defined taxon., d. a group of
organisms with a large number of traits in common., e. all of theabove.
18. The process of spermatogenesis results in:
A. 4 diploid sperm; B. 1 diploid sperm and 3 haploid polar bodies;C. 1 haploid sperm and 3 haploid
polar bodies; D. 4 haploid sperm
19. Which cell division process results in an unequal division ofthe cytoplasm?
A. Spermatogenesis; B. Testiculargenesis; C. Oogenesis; D. None ofthe above
20. Meiosis is the process by which:
A. 1 diploid cell becomes 4 haploid cells; B. 1 diploid cellbecomes 1 haploid cell and 3 haploid polar
bodies; C. 1 haploid cell becomes 4 diploid cells; D. Both A andB
21. The phase of mitosis where chromosomes line up at the equator(middle) of the cell is called:
A. Anaphase; B. Telophase; C. Interphase; D. Metaphase
22. Chromosome #6 from Mom and Chromosome #6 from Dad form achromosome pair called:
A. Sister Chromatids; B. Centromeres; C. Homologous Chromosomes; D.Spindle Apparatus

scarlethare433

I have a quiz for the cell structures and their functions. Please answer these questions.

1. CHEEK CELLS

Cheek cells are not the major producers of mucus in the mouth, they do produce a small amount of mucopolysaccharide. What inclusions should be especially numerous in the cytoplasm of these cells in order to make and excrete such a substance? What function does their flat shape provide?

2. BLOOD SMEAR (FROG & HUMAN)

How they differ? How is each adapted to the metabolic level of its owners? What is the function of these cells? What is the natural selection benefit of removing nuclei and mitochondria from the human red blood cells?

3. LEAF TISSUE (cross section)

Is there a cell membrane? A cell wall? Note the green pigment in the chloroplasts. Is green color found outside of chloroplasts? Why?

4. GIANT MULTIPOLAR NEURON

Look for the long fibers that support the processes. What cytoskeletal components are these composed of? Can you suggest a function for this characteristic?

5.SPERM (frog)

How do this structure and size relate to the function of a sperm?

6. ADIPOSE TISSUE

Look for cell boundaries and nuclei in the cytoplasmic areas. Can you suggest a function of these fat cells?

7.EPITHELIUM (columnar)

What is the internal structure of microvilli? What is their function?