A diploid fruit fly has 8 chromosomes. Which of the following terms should not be used to describe a fruit fly with four sets of chromosomes?A. Polyploid B. Aneuploid C. Euploid D. Tetraploid E. 4n

Possible options:  A. Autopolyploidy B. Allopolyploidy C. Chromosome duplication D. Pericentric inversion

a. What is the diploid number of chromosomes for a human? b. What is the haploid number of chromosomes for a human? Which cells are considered diploid, gametes or somatic cells? C. d. Which cells are considered haploid, gametes or somatic cells?

Draw a diagram of meiosis in a cell where 2n = 6, in a case where there is interchromosomal mixing. Use a clearly labelled colour code (what does each colour represent?) to represent the chromosomes.

An individual can have an abnormal number of chromosomes as a result of nondisjunction. Identify the following example of nondisjunction that results in an abnormal number of chromosomes. A. Sister chromatids do not separate in meiosis II.   B. Homologous chromosomes move apart appropriately during meiosis I.   C. Mitosis occurs normally during embryonic development.   D. Two normal gametes fuse during fertilization.

Answer the following series of questions based on this karyotype obtained from a newly discovered plant species. 6 7 10 11 12 自 0 13 14 15 16 17 18 19 20 21 22 а. What is the ploidy of the genome shown in the karyotype? b. How many chromosomes are shown in this karyotype? c. How many sister chromatids are shown in the content shown in the circle? d. Given a particular locus, provide one representation of a genotype for a heterozygote e. How many different alleles for a given gene can this plant species carry? f. What is the haploid number if a somatic cell has this karyotype? 摩

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

Crossovers occur between  a. non-sister chromatids during meiosis I  b. non-sister chromatids during meiosis II c. sister chromatids during meiosis I  d. sister chromatids during meiosis II

Which of the following occur during anaphase II of meiosis?   Select one: a. The APC adds phosphates to motor proteins causing them to rebuild the nuclear envelope. b. Homologous chromosomes of the tetrad separate and move to opposite poles of the newly dividing cell. c. DNA de-condenses. d. Non-identical (due to recombination) sister chromatids are split, attach to motor proteins, and are moved to separate poles

A medical student is studying a liver biopsy taken from a regenerating liver following a partial hepatectomy. The student sees a dividing cell in which the chromosomes are aligned on a plate. Which of the following best describes the character of the chromosomes in the plate? A. 23 chromosomes with 2N DNA total and with each chromosome having one chromatid B. 23 chromosomes with 4N DNA total and with each chromosome having two chromatids C. 46 chromosomes with 2N DNA total and with each chromosome having one chromatid D. 46 chromosomes with 4N DNA total and each chromosome having two chromatids E. 92 chromosomes with 2N DNA total and with each chromosome having two chromatids