BIOL 226 Lecture Notes - Lecture 3: Interphase, Mitosis, Dna Replication

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mauvepug296

30 Sep 2018

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Mitosis - process where cells asexually divide to reproduce. One cell turns into two genetically identical daughter cells. These steps ensure that the daughter cells have identical dna, this contrasts wit. Meiosis: has a lot of features in common with mitosis. Diploid has a set of 2 homologues chromosomes. Haploid has half the amount of chromosomes in the original diploid cells. Dna (dna replication is s phase of life cycle) Chain of repeating units with 4 different choices at each location. 4 bases are guanine, cytosine, adenine, thymine (a pairs with t, g pairs wit. Transcription of dna = rna (ribose nucleic acid) -- most rna is single str. Protein starts out as polypeptides (chain of amino acid residue. Chain of amino acid residues; 20 choices at each locat. G pairs with c) single stranded id residues) each location. **refer to professor schott"s notes for more detail on these notes.

Related Questions

5- The human genome consists of:

45 individual chromosomes

46 chromosomes (23 pairs)

42 chromosomes (22 pairs)

23 individual chromosomes

6- A specific sequence of DNA that codes for a particular protein.

chromosome

genome

gene

chromatid

7- In the cell cycle, M phase is NOT considered a part of interphase.

True

False

8- At the end of ______________ each cell is genetically identical to the parental cell. At the end of ______________ each cell received Â½ the genome of the parental cell:

mitosis; budding

mitosis; meiosis

budding; meiosis

meiosis; mitosis

9- In plant cells, a _____________________ develops at the midpoint between the two groups of chromosomes in a dividing cell, forming the wall between the two new daughter cells.

kinetochore

cleavage furrow

centromere

cell plate

10- Which term best describes how bacteria describe:

binary fission

meiosis

mitosis

diffusion

pucecat917

1. only one chromosome of a homologous pair is present in a cell

2. sister chromatids seperate

3. homologous chromosomes pair up

4. parent cell and daughter cells are genetically identical to each other

5. chromosomes replicate before nuclear division

6. crossing over

7. involved in growth and repair

8. homologous chromosomes separate

9. synthesis of sister chromatids before division

10. independent assortment

Answer Choices:

A. occurs ONLY in meiosis

B. occurs in BOTH mitosis and meiosis

C. occurs ONLY in mitosis

harlequineel895

M2A1 Worksheet: Mitosis and Meiosis

A dog is a diploid organisms and has 39 pairs of chromosomes (2n = 78), where n = 39 chromosomes from each parent. Use this example to answer the following question regarding chromosomal number.

INTERPHASE

How many chromosomes are present in the somatic cell?

What do they look like?

What are they âdoingâ in G1 of this phase?

What is happening in the S phase?

What is happening in the G2 phase?

What follows G2 phase in a somatic cell?

What follows G2 phase in a gamete cell?

MITOSIS

Number of chromosomes in the parent cell.

Number of chromatids in the parent cell.

Number of chromosomes in the daughter cell.

Number of chromatids in the daughter cell.

How many daughter cells are produced?

Are the daughter cells haploid or diploid?

How many cell divisions take place?

In what type of cell does this division occur?

Meiosis 1:

Number of chromosomes in the parent cell.

Number of chromatids in the parent cell.

Number of chromosomes in each Meiosis I daughter cell.

Number of chromatids in each Meiosis I daughter cell.

Are the daughter cells haploid or diploid at the end of Meiosis 1?

Meiosis II:

Number of chromosomes in the âparentâ cell (which is a daughter cell from Meiosis I).

Number of chromatids in the âparentâ cell.

Number of chromosomes in each Meiosis II daughter cell.

Number of chromatids in each Meiosis II daughter cell.

Are the daughter cells haploid or diploid at the end of Meiosis II?

Which phase or phases of Meiosis account for the genetic variability among the daughter cells? Howâ¦ what happens in this phase to create the diversity?

Comparing Mitosis and Meiosisâ¦..

How many daughter cells result from Mitosis? Are they diploid or haploid?

How many daughter cells result from Meiosis? Are they diploid or Haploid?

Cell structures and function: Match each organelle to its function:

Organelle Function

Lysosome 1. Lipid synthesis

Rough ER 2. Houses DNA

Nucleus 3. Energy extraction

Smooth ER 4. Dismantles debris

Golgi apparatus 5. detoxification

Mitochondria 6. Protein synthesis

Peroxisome 7. Processes secretions

What is the function of checkpoint proteins in the cell cycle?

How can all of a personâs cells contain exactly the same genetic material, yet specialize as bone cells, nerve cells, muscle cells and connective tissues?

What are the 3 primary germ layers?

Briefly, in one or two sentences, distinguish between

a bacterial cell and a eukaryotic cell

interphase and mitosis

mitosis and apoptosis

an autosome and a sex chromosome

homologous pair of chromosomes and a sister chromatid

centromere and centriole

chromosome and chromatid

monozygotic and dizygotic twins

allele and gene

BIOL 226 Lecture Notes - Lecture 3: Interphase, Mitosis, Dna Replication

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