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40 POINTS!!!
1.Please place the steps of the Cell Cycle for a new cell in order from first (on top) to last (on bottom)
1. M (Mitosis)
2. Cytokinesis
3. G2 (Gap 2)
4. S (Synthesis)
5. G1 (Gap 1)

2. Mitosis and meiosis are different in that the daughter cells produced by mitosis ______ and the daugher cells produced by meiosis ______.

a. are different in function compared to the parent cell / are the same in function as the parent cell.

3. A chromosome in metaphase is made up of _________.
a.2 daughter centrioles
b .2 gene linkages
c.2 sister chromatids
d.a tetrad
b.go through 2 divisions. / go through 1 division.
c.have the different numbers of chromosomes compared to the parent cell / have the same number of chromosomes as the parent cell.
d. are identical to the parent cell / are different from the parent cell.
What is occurring in the G1 and G2 phases of a normal cell cycle?
a.cell division
b.growth
c.nuclear division
d.chromosome replication

4.What is occurring in the G1 and G2 phases of a normal cell cycle?
a.cell division
b.growth
c.nuclear division
d.chromosome replication

5.By dividing twice, the original parent diploid cell is able to produce 4 haploid gametes.
Is this statement true for the process of Meiosis?
True
False

6. Select the Correct ones
a.The diploid number for humans is 46 chromosomes.
b.Somatic and gamete cells contain the same number of chromosomes- in the same organism.
c.Mitosis creates somatic cells.
d.Body cells are also called somatic cells.

7.A chromosome in metaphase is made up of _________.
a.2 daughter centrioles
b.2 gene linkages
c.2 sister chromatids
d. tetrad

8.By dividing twice, the original parent diploid cell is able to produce 4 haploid gametes.
Is this statement true for the process of Meiosis?
True
False

9.Crossing over can BENEFIT eukaryotic organisms by which of the following?
Select all correct responses.
a.Crossing over uses more energy and is vulnerable to errors.
b.Crossing over increased genetic variation- diversity.
c.Crossing over results in the production of genetically unique organisms.
d.Crossing over creates diploid cells from haploid cells.

10.The part of the cell cycle where the cell grows to its full size, copies the DNA and organelles and prepares to divide is called _____.
a.mitosis
b.prophase
c.cytokinesis
d.interphase

Respuesta :

1. G1, S, G2,cytokinesis, mitosis

2.  the daughter cells produced by mitosis is diploid and the daughter cells produced by meiosis is haploid.

a) haploid germ cells are different in function compared to the parent cell and the somatic cells are the same in function as the parent cell.

3.  A chromosome in metaphase is made up of 2 sister chromatids.

1. Germ cells have the different numbers of chromosomes compared to the parent cell.

Somatic cells have the same number of chromosomes as the parent cell.

4. Growth is occurring in the G1 and G2 phases of cell cycle.

5. True

6.Body cells are also called somatic cells.

7. A chromosome in metaphase is made up of 2 sister chromatid.

9. Crossing over increased genetic variation- diversity  and Crossing over results in the production of genetically unique organisms.

10. Interphase.

Explanation:

G1,G2 and S comes in the interphase. The G1 Phase is the phase of protein synthesis and mRNA production, enzymes and nutrients for DNA synthesis are made.

S- phase: The cell utilizes the machinery made in G1 phase for DNA replication.

G2 PHASE: it is the growth phase as the cell grows in size to get prepared for mitosis.

Mitosis : It occurs in somatic cells of the body . In this cycle 2 identical diploid cell is formed from the parent cell. It is useful in growth and repair of the body cells

cytokinesis: It is the division of cytoplasm in the two daughter cells during meiosis and mitosis. It takes place in the later stages of meiosis or mitosis.

In meiosis 4 haploid cells or germ cell or gametes are formed having n no of chromosomes. Due to the genetic recombination and crossing over the cells receive varied traits and genetic diversity is created this way.

In metaphase chromosomes gets lined on the metaphase plate or equatorial plate with spindle fibres and gets cell ready to divide.

Gamete cells have haploid number of chromosomes as 26 because on fertilization the diploid zygote is formed.

Somatic cells help in repair and growth hence have same number of chromosomes.

During meiosis 2 cycles takes place one is equational and other is reduction division.

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