1.Describe the difference between a DNA molecule, a chromatid, and a chromosome. 2.Predict the number of...
1.Describe the difference between a DNA molecule, a chromatid, and a chromosome.
2.Predict the number of DNA molecules, chromatids, and chromosomes for a cell at a given stage of meiosis or mitosis.
3.Recognize the differences in meiosis in plants and animals (male and female).
Homework Answers
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1.Describe
the difference between a DNA molecule, a chromatid, and a
chromosome.
2.Predict
the number of...
Can someone please check my answer? Understanding chromosome number and behavior during cell division is an...
Can someone please check my answer? Understanding chromosome number and behavior during cell division is an important concept in genetics. Fill out the chart below for each phase of mitosis in terms of N (where N = haploid number). For example, humans have a haploid number of 23. There are 46 chromosomes (2N) present in prophase of mitosis. Each chromosome is present in its replicated form (i.e. as sister chromatids) so there will be 2 chromatids per chromosome and the...
1. Describe one experiment that can test the hypothesis that DNA replication is semi conservative. Describe...
1. Describe one experiment that can test the hypothesis that DNA replication is semi conservative. Describe the results of this experiment if replication was conservative. And if it was distributive? 2. What type of chemical bond contributes to the specificity of base paring in the DNA? Are there any other chemical or physical factors in the structure o f the DNA molecule contributing to the thermodynamic stability of the DNA? 3. List the m ajor differences between DNA and RNA....
14. A chemical which is able to prevent chromatid separation is added to a cell culture....
14. A chemical which is able to prevent chromatid separation is added to a cell culture. Which phase of mitosis would be most affected? anaphase prophase telophase G1 G2 15. In a cell which has started prophase of mitosis, there are times as many chromatids as the number of total chromosomes in that same original parent cell during G1. two three four six 17. Which of the following best describes the key process occurring with formation of bivalents (chiasma) during...
Half of a duplicated chromosome cells that have half the normal amount of DNA M To...
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...
9. The fusion of a and a _produces a zygote with 46 (2n) chromosome number. 10....
9. The fusion of a and a _produces a zygote with 46 (2n) chromosome number. 10. During meiosis, the chromosome number: a) is doubled b) is reduced c) remains the same d) becomes diploid 11. Meiosis produces haploid (#) reproductive cells called _ 12. Name the 2 human gametes & tell their chromosome number. 13. Cells starting mitosis & meiosis begin with a (haploid or diploid) set of chromosomes. 14. How many times do cells divide during meiosis? 15. What...
1. The mitotic spindle and microtubules were not present in the mitosis models; describe their process...
1. The mitotic spindle and microtubules were not present in the mitosis models; describe their process throughout the steps of mitosis. 2. Are the chromosomes in mitosis a mixture of mother and father chromosomes? Explain your answer, comparing the process to meiosis. 3. Using your microscope images in Photo 12 and Photo 18, describe the difference in the telophase/cytokinesis step of mitosis between plants and animals. 4. Describe the similarities and differences between the microscopic images of the plant and...
all these questions have more than one correct answers 1) Meiosis & mitosis have similarities as...
all these questions have more than one correct answers 1) Meiosis & mitosis have similarities as well as differences. Which of the following represent similarities? a) Both increases genetic variation b) Both change in chromosomes number in daughter cells c) Both only occur in eukaryotes D) DNA replication must occur prior to both e) Both make use of a spindle to separate chromatids 2) Meiosis is a special form of cell division. Select any of the following that applies to...
growth -Interphase 7 In plants, . (Circle the correct answer.) a. the life cycle is different...
growth -Interphase 7 In plants, . (Circle the correct answer.) a. the life cycle is different from that of animals in that plants alternate between diploid and haploid forms b. meiosis occurs in the ovary of female plants and male gametes are produced in the anthers of flowers c. there are two distinct phases: n sporophyte generation and 2n gametophyte generation e. both a and c 8 What are polar bodies? What are they used for? A a small haploid...
If an animal has 8 different chromosomes what is the number of chromosomes in a Answer:...
If an animal has 8 different chromosomes what is the number of chromosomes in a Answer: HaploidDiploid 024. If an animal has 14 chromosomes (2n-28), without recombination, how many different gametes can this animal produce? (1 pt) A 14 8 282 274 D. 22 Q25. On the human Karyotype shown here...(6 pts) How many total chromosomes (2n?)? How many pairs of homologs? How many DNA molecules TOTAL? How many pairs of autosomes? Is this from a male or female? Describe...
Match the following terms to the correct definition Match the following terms to the correct definition. 1. term used t...
Match the following terms to the correct definition
Match the following terms to the correct definition. 1. term used to describe the double stranded chromosomes present after DNA replication alleles A. cell division that results in the formation of B 4 cells each containing haploid number of chromosomes crossing over division of the cytoplasm type of cell division that results in the formation of 2 daughter cells genetically identical to parent cell pairing of homologous sister chromatids during prophase I...
14. A chemical which is able to prevent chromatid separation is added to a cell culture. Which phase of mitosis would be most affected? anaphase prophase telophase G1 G2 15. In a cell which has started prophase of mitosis, there are times as many chromatids as the number of total chromosomes in that same original parent cell during G1. two three four six 17. Which of the following best describes the key process occurring with formation of bivalents (chiasma) during...
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...
9. The fusion of a and a _produces a zygote with 46 (2n) chromosome number. 10. During meiosis, the chromosome number: a) is doubled b) is reduced c) remains the same d) becomes diploid 11. Meiosis produces haploid (#) reproductive cells called _ 12. Name the 2 human gametes & tell their chromosome number. 13. Cells starting mitosis & meiosis begin with a (haploid or diploid) set of chromosomes. 14. How many times do cells divide during meiosis? 15. What...
growth -Interphase 7 In plants, . (Circle the correct answer.) a. the life cycle is different from that of animals in that plants alternate between diploid and haploid forms b. meiosis occurs in the ovary of female plants and male gametes are produced in the anthers of flowers c. there are two distinct phases: n sporophyte generation and 2n gametophyte generation e. both a and c 8 What are polar bodies? What are they used for? A a small haploid...
If an animal has 8 different chromosomes what is the number of chromosomes in a Answer: HaploidDiploid 024. If an animal has 14 chromosomes (2n-28), without recombination, how many different gametes can this animal produce? (1 pt) A 14 8 282 274 D. 22 Q25. On the human Karyotype shown here...(6 pts) How many total chromosomes (2n?)? How many pairs of homologs? How many DNA molecules TOTAL? How many pairs of autosomes? Is this from a male or female? Describe...
Match the following terms to the correct definition
Match the following terms to the correct definition. 1. term used to describe the double stranded chromosomes present after DNA replication alleles A. cell division that results in the formation of B 4 cells each containing haploid number of chromosomes crossing over division of the cytoplasm type of cell division that results in the formation of 2 daughter cells genetically identical to parent cell pairing of homologous sister chromatids during prophase I...
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