Cricotopus sylvestris is a small two-winged fly that is often seen in swarms near water or marshy areas. C. sylvestris is a diploid organism (2n = 4). Make a sketch of: 1. Chromosomes before the S phase on the cell cycle 2. Chromosomes during Metaphase (mitosis). 3. Chromosomes during Anaphase I 4. Chromosomes in a gamete (sperm cell or egg)
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- If a muscle cell of a typical organism has 32 chromosomes, how many chromosomes will be in a gamete of that same organism? a.8 b. 16 c. 32 d. 64Which of the following is a FALSE statement regarding human chromosomes? A. The chromosome number in humans is 2n=46. B. Gametes have half number of the chromosomes as in somatic cells. C. There are 22 pairs of autosomes and 2 sex chromosomes. D. Liver cells can be polyploids. They can have 23, 46, 69 or 92 chromosomes.Which of the following statements are true regarding homologous pairs of chromosomes? Select all that apply. A. They are the same size B. Their prescence indicates a cell is a diploid C. They are identical copies of one another D. One of the homologous chromosomes in a set is synthesized during S phase E. They line up next to each other during metaphase I of meiosis F. They are separated in anaphase I of meiosis
- A diploid cell in a Canadian beaver will have 20 pairs of homologous chromosomes. Which of the following would best describe the DNA in a haploid gamete for this beaver? (Read carefully!) 20 unique chromosomes 40 unique chromosomes 20 pairs of homologous chromosomes 10 unique chromosomes 10 pairs of homologous chromosomesA normal diploid cell from a chimpanzee has 48 chromosomes. How many chromosomes will be in a chimpanzee cell just before meiosis begins, after meiosis I, and after meiosis II? After which of these stages will the chromosomes have two chromatids?A diploid male organism has two homologous chromosomes. A and B are from its maternal parent, while A’ and B’ are from its paternal parent. Draw the chromosomes at the following stages: a, anaphase of mitosis b. anaphase of the first meiotic division c, anaphase of the second meiotic division If the same chromosomes were involved in meiosis in a female, would the kind of egg nuclei produced be different from the sperm nuclei? Why?
- All of the following is significant application of mitosis except. a. Cloning b. Budding c. Formation of Gametes d. Stem Cell Regeneration If 6 cells undergoing celll division has 12 chromosomes, how many chromosome will there be in the daughter cells after mitosis and meiosis II respectively? a. 6 and 12 b. 12 and 6 c. 6 and 3 d. 6 and 6 In meiosis, the number of chromosomes of the mother cell compared to the resultant daughter cell's chromosome is A. doubled B. halved C. tripled D. the same Elongation of the cell undergoing the last phases of mitosis is due to A. movement of the chromosomes to the opposite poles B. increase in the volume of the cytoplasm that should be contained C. depolymerization of the spindle fibers connected to the kinetochore D. polymerization of the spindle fibers not connected to the kinetochoreRose plants are octoploid (octo = 8). Gametes from a rose plant contain 40 chromosomes. Indicate which of the following are TRUE statements. Select 3 correct answer(s) The gametes from a rose plant are diploid. The basic chromosome number of a rose plant cell is 40. The number of chromatids in a rose plant cell at G2 of the cell cycle is 160. The number of chromatids in a rose plant cell at G2 of the cell cycle is 80. The gametes from a rose plant are tetraploid. The basic chromosome number of a rose plant cell is 10. Rose plants are aneuploid.If a diploid organism has 14 chromosomes (2n=14) a. How many chromosomes will its gametes have? b. After meiosis I during gamete formation, how many chromosomes are in each daughter cell? c. After meiosis I during gamete formation, how many chromatids are in each daughter cell?
- . Match each term to its corresponding definition. 1. the chromosomes that do not determine the sex of an individual 2. the sex chromosomes of a human female 3. the chromosomes that determine the sex of an individual 4. the sex chromosomes of a human male 5. a picture of the chromosomes of an individual a. XX b. autosomes c. karyotype d. XY e. sex chromosomesMost body (nonreproductive) cells of humans and other multicellular eukaryotes have two sets of each chromosome. Such cells are _________ and the matching pairs of chromosomes are called _________. a. diploid; homologous chromosomes b. haploid; homologous chromosomes c. diploid;sisterchromatidsd. tetraploid; sister chromatidsThe diploid number of an organism is 12. How many chromosomes would be expected from the following conditions? a. monosomic for 1 chromosome b. trisomic for 2 chromosomes c. tetrasomic for 1 chromosome d. nullosomic for 2 chromosomes e. monoploid f. triploid