Homework Answers
1. Meiosis I and meiosis II
Meiosis results in the formation of 4 haploid daughter cells. synapsis (zygotene) crossing over(pachytene) takes place during prophase I of meiosis I . At the end of telophase I 2 haploid daughter nuclei are formed. Then these 2 daughter nuclei undergo meiosis II ( similar to mitosis) results the formation of 4 haploid cells.
2. Homologous chromosomes(bivalent) - these are similar chromosomes ,one divided rom each parent are attracted towards each other and they pair along their entire length.The pairing of homologous chromosomes are called synapsis. Ecah pair of homologous chromosomes are said to be bivalent. The number of bivalent equal to the half of diploid number of chromosomes .the pairing starts either from the centromeal region or from the terminal region .as a result of synapsis each gene is brought in to closer contact with its allele located on the homologous chromosomes . two homologous chromosomes are brought together by characteristics ladder like structure called synaptonemal complex.
3. Hypotonic
as a result cells are in swollen condition . water enters into the cells .because more waterconcentration is present outside the cell.
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What type of cell division is depicted by this...
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The purpose of interphase of a cell cycle is: A to divide itself in half in...
The purpose of interphase of a cell cycle is:
A
to divide itself in half in order to facilitate growth and/or
reproduction
B
to produce gametes
C
the 'living' phase of the cell, in which the cell obtains
nutrients, grows, reads its DNA, and conducts other "normal" cell
functions
D
to facilitate repairs from viruses and bacteria
The purpose of the mitotic phase of a cell cycle is:
A
to divide itself in half in order to facilitate growth and/or...
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T/F: Human blood type has 6 genotypes. T/F: If albinism is a recessive trait and 2...
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The cell division depicted here is Mitosis only Meiosis only Binary fission All of the above None of the above The cell type is Animal Plant Bacterium All of the above None of the above What phase of cell division is the cell at? Anaphase Interphase Metaphase Prophase Telophase How many chromosomes each of the daughter cells will have at the end of cell division? 3 6 9 12 None of the above
Match each description with the appropriate type of cell division. Match each description with the appropriate type of cell division. The new cells produced are genetically identical to each other and to the original coll During the first nuclear division, sister kinelochores fuse and are attached to the same pole Chromosomes The chromosome Independent condense before they number is reduced from Crossing over occurs assortment of maternal attach to the spindle 2 sets to 1 set and paternal chromosomes Nuclear...
Please type long answers on a separate sheet and attach to this page to hand in. 1. The five cells shown in figures a-e are all from the same individual. a) What is "n" in this organism? (0.5pts) b) Under each cell indicate i) which process depicted (mitosis, meiosis I, or meiosis II) and ii) what stage of cell division is represented. (1.25pt) A certain adult plant cell has 16 chromosomes. (1 point) (a) How many chromatids are in a...
Crossing-Over in Meiosis Meiosis is a process of nuclear division that reduces the number of chromosomes in new cells to half the number in the original cell. The parent cell is diploid (2n), and it begins meiosis with a replicated set of chromosomes. During meiosis, this parent cell Homologou will divide twice to create four haploid (1n) cells. pairs During prophase I of meiosis I, homologous pairs of chromosomes pair up and stick together to form tetrads through the process...
Unit 3 Study Resource Meiosis • Process by which diploid cells create haploid cells NOT part of the cell cycle > only some cells ever undergo meiosis During meiosis I, homologous chromosomes line up to allow them to be separated into two new cells o They can become "tangled" during this phase, which leads to crossing-over (rearranging the alleles) O Result of meiosis I is two non-identical haploid cells Meiosis Il looks very similar to mitosis, in that sister chromatids...
The purpose of interphase of a cell cycle is:
A
to divide itself in half in order to facilitate growth and/or
reproduction
B
to produce gametes
C
the 'living' phase of the cell, in which the cell obtains
nutrients, grows, reads its DNA, and conducts other "normal" cell
functions
D
to facilitate repairs from viruses and bacteria
The purpose of the mitotic phase of a cell cycle is:
A
to divide itself in half in order to facilitate growth and/or...
12. What is a map unit? Choose the best answer The physical distance between 2 genes on a chromosome, measured in the number of nucleotides (base pairs) between the 2 genes. The distance between 2 genes on a sa le chromosome measured by the % of recombinant-type gametes produced by many individuals e nes) of the same genotype, this is the same as the % of ,ecombinant-type offspring produced in a cross or a double heterozypote with an individual hom...
Half of a duplicated chromosome cells that have half the normal amount of DNA M To divide, plant cells must form a(n) - Reproduction style used by yeasts Process whereby daughter cells separate themselves A Homologous pair B. Parthenogenesis C. Centriole D. Cytokinesis 5. Spindle fibers F. Cell wall G. Budding H. Genome Cell plate J. Regeneration Vegetative reproduction Making more plants from parts of other plants Term referring to the cell division that bacteria do An organism that produces...
T/F: Human blood type has 6 genotypes. T/F: If albinism is a recessive trait and 2 carrier parents mate, they have a 25% chance of having 1. 2. an albino child. 3. 4. 5. 6. 7. 8. 9. 10. T/F: The sex of an individual does not affect patterns of inheritance for most traits. T/F: Genes are segments of RNA that code for proteins T/F: Wavy hair is an example of incomplete dominance. T/F: If a man has normal color...
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