1). A diploid somatic cell from a dog (Canis lupus familiaris) has a total of 78 chromosomes (2n = 78).As in humans, sex chromosomes determine sex: XX in females and XY in males.a) What is the total number of DNA molecules in G2 of the cell cycle?b) What is the total number of sister chromatids during prometaphase?c) What is the total number of telomeres in a somatic dog cell in G1?d) What is the total number of autosomes?

a) Total number of DNA molecules in G2 of the cell cycle:In the G2 phase, the cell has already…

Answered: 1). A diploid somatic cell from a dog…

Human Anatomy & Physiology (11th Edition)

11th Edition

ISBN:9780134580999

Author:Elaine N. Marieb, Katja N. Hoehn

Publisher:Elaine N. Marieb, Katja N. Hoehn

Chapter1: The Human Body: An Orientation

Section: Chapter Questions

Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...

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4) What is occurring during the Anaphase stage of mitosis, such as is shown in the figure to the right? A) The DNA is being replicated. B) The homologous chromosomes are separating. C) Sister chromatids are being pulled to opposite poles. D) A cleavage furrow is forming to divide the cell. Inid parents made gametes using
In a diploid cell, two homologous chromosomes are: A) similar , but from two different species B) mirror images of each other C) similar, but from two different people D) identical to each other E) copies of each other
3. An inversion heterozygote has the following inverted chromosome: Centromere )))))))))))) A B JI HGF ED CKLM Inverted region What would be the products if a crossover occurred between the genes F and E on the inverted chromosome and the normal chromosome?
20. Which of the following occurs during mitosis but not during meiosis I? (A) The chromosomes are pulled to opposite poles of the spindle apparatus. (B) The chromatids of each chromosome are separated. (C) The nuclear envelope breaks down. (D) Both synapsis and crossingover take place. (E) The diploid number of chromosomes is reduced to the haploid number. 21. Oxygen consumption can be used as a measure of metabolic rate because oxygen is (A) necessary for ATP synthesis by oxidative phosphorylation (B) necessary to replenish glycogen levels (C) necessary for fermentation to take place (D) required by all living organisms (E) required to break down the ethanol that is produced in muscles 22. Membranes are components of all of the following EXCEPT a (A) microtubule (В) nu (C) Golgi apparatus (D) mitochondrion (E) lysosome 23. In a mesophyll cell of a leaf, the synthesis of ATP occurs in which of the following? I. Ribosomes II. Mitochondria III. Chloroplasts (A) I only (В) II only (C)…
A cell with 40 CHROMOSOMES (diploid number) goes through the cell cycle. What is the number of CHROMOSOMES after doubling the DNA in synthesis phase? Question 8 options: a) 40. b) called haploid. c) 80. d) 20.
If the most basic function of the cell cycle is to accurately duplicate the DNA in the chromosomes and distribute the copies precisely to the daughter cells, why are there gaps between S-phase and M-phase?
Select all correct answers. If chromosomes spontaneously double in a diploid somatic cell, the resulting cell (after the doubling) will be: A.)tetraploid B.)allopolyploid C.)tetrasomic D.)aneuploid E.)autopolyploid F.)disomic G.)euploid
3 6 points A diploid cell in G1 of interphase has eight chromosomes. How many chromosomes and DNA molecules will be found per cell when this original cell progresses to the following stages? Complete the table below. Anaphase II G1 of interphase G2 of interphase- Telophase 1 (after cytokinesis) Anaphase I S 8 chromosomes/cell and 8 DNA molecules/cell 8 chromosomes/cell and 16 DNA molecules/cell 8 chromosomes/cell and 8 DNA molecules/cell 8 chromosomes/cell and 16 DNA molecules/cell 8 chromosomes/cell and 16 DNA molecules/cell Prophase II Telophase II (after cytokinesis) Metaphase I Metaphase II 8 chromosomes/cell and 16 DNA molecules/cell 4 chromosomes/cell and 8 DNA molecules/cell
1/outline ¥ Question Completion Status: QUESTION 9 During metaphase II of meiosis, O pairs of homologues chromosomes line up in the centre O pair of sister chromatids line up at the centre O Chromosomes are divided into two O Chromosomes thicken QUESTION 10 Which of the following is one of the body's first lines of defense against infection? A) antibodies B) obstacles such as skin and mucous membranes C) increased production of certain hormones D) decreased heart rate O antibodies obstacles such as skin and mucous membranes O increased production of certain hormones O decreased heart rate Save Shmtto sae and submit: Click Save All Answers to save all answers.
Why do eukaryotic cells need to go through the elaborate procedure of mitosis rather than simply dividing during interphase? Select as many answers as apply. 1.Daughter cells must be genetically identical to the mother cell, for homeostasis and ordered tissue growth. 2.Bivalent chromosomes must condense and be separated in an orderly fashion, to allow equal distribution of copies into daughter cells 3.Physically dividing the nucleus during interphase would likely lead to gross chromosome breakage and highly unequal assortment of genetic information into daughter cells. 4.Dividing the nucleus during interphase would have the same outcome as mitosis 5.Daughter cells must have half the number of chromosomes after mitosis than the mother cells 6.The homologous pairs of chromosomes need to be separated, to ensure copies go to the daughter cells.
14) The plus-end of the microtubule (select all that apply) a) has the same structure as the minus-end b) connect to kinetochores in the mitotic spindle c) connect to centrosomes in the mitotic spindle d) have proteins that bind and change plus-end dynamics e) None of the above

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