Today you learned about the structure of chromosomes and some of the conditions that arise in humans from chromosomal abnormalities.  Why do you think this lesson directly precedes a lesson on mitosis and the cell cycle (about how cells duplicate)?  Explain your reasoning using at least TWO facts/characteristics of chromosomes and information about at least ONE chromosomal disorder from today's lesson.

Q: chromosomes. Chromosome I is metacentric, chromosome II is telocentric, chromosome III is…

A: The cell cycle is the series of events that divide the cells.

Q: Human Somatic (non reproductive) cells have 46 chromosomes organized into 23 pairs.  A human somatic…

A: Cell division by mitosis is one of the most important life processes that are a part of the…

Q: What terms can be used to describe a fruit fly that has a total of 7 chromosomes because it is…

A: Chromosomes are the condensed form of DNA (deoxyribonucleic acid) along with histone proteins. These…

Q: onsider the following statements about polytene chromosomes. Which are true? More than one answer…

A: Polytene chromosomes are large eukaryotic chromosomes which have multiple DNA strands (chromatids)

Q: n-disjunction is the word we use to describe the failure of a pair of homologous chromosomes or ter…

A: Answer :: 1) Gametes are the product of meiosis which reduce the number of chromosomes to half in…

Q: During cell division, the failure of enzymes to detach cohesin molecules fro- elect one: A. more DNA…

A: During cell division, the failure of enzymes to detach cohesin molecules from the centromere can…

Q: Think about the important functions of telomeres. Now, imagine a scenario in which a mutant…

A: Introduction  Telomeres are repeating sequences that protect the natural ends of linear eukaryotic…

Q: In the tracking chromosomal DNA movement through mitosis experiment, how many chromosomes did each…

A: MITOSIS:- When two chromatids of a duplicated chromosome are bound together at a region of DNA, then…

Q: Define the following terms and their relationships to one another:A. interphase chromosomeB. mitotic…

A: Gene is the primary fundamental unit of heredity. The plants and animals both have certain nucleic…

Q: What terms can be used to describe a fruit fly that has a total of 7 chromosomes because it is…

A: Drosophila melanogaster It is a fruit fly.

Q: Which of the following human cells contains 22 pairs of autosomes and one pair of heteromorphic sex…

A: Heteromorphic chromosomes are sex chromosome that has an allelic difference at the sex‐determining…

Q: ompare and contrast the appearance of chromosomes AND the behaviour of chromosomes at analogous…

A: Cell division is the biological process that results in the production of two or more cells from a…

Q: Which of the following structures are associated with the ends of chromosomes and may shorten over…

A: Chromosomes are thread like structure made of a single molecule of DNA associated with proteins.…

Q: A diploid organism contains 10 sets of homologous chromosomes for a total of 20 chromosomes in each…

A: If the cell has 10 pairs of chromosome that means , total chromosome number is 20.  During DNA…

Q: a) What kind of thing went wrong with these chromosomes? Give a one-word (or two-word) answer. b)…

A: Here we see that,  non-homologous chromosomes are going through re-arrangements as they are…

Q: 1. Pretend that the fingers of both of your hands are chromosomes. Hold up both your hands. a. How…

A: Hi! Thank you for your question. As you have posted multiple questions and have not mentioned which…

Q: Answer the following four questions about DNA and chromosomes. (Hint: there may be slightly…

A: Deoxyribonucleic acid (DNA) It is one of the genetic material which have two polynucleotide chains.…

Q: I am trying to  understand DNA/chromosome structure and replication. I have a culture dish of human…

A: DNA is the genetic material present in the nucleus of the cells of an organism. It directs the…

Q: A diploid cell with three pairs of homologous chromosomes is shown on the left. Each letter…

A: A phase of cell division known as metaphase (mitosis or meiosis). Individual chromosomes are…

Q: what happens if the chromosomes within an individual are not tightly packed. How does this affect…

A: Chromosomes are made up of a DNA-protein complex called chromatin that is organized into subunits…

Q: The cells shown in the image are from a rare species of plant and illustrate different stages of…

A: Cell division is an important process that helps to keep the cells growing in number. This enables…

Q: You have discovered a new human gene, located on chromosome 5 which you name it ellenjenkins after…

A: A gene is a definite sequence of nucleotides present in DNA which is capable of undergoing…

Q: 2 3 4 5 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 ху In human, each cell has how many…

A: The cell division is the process that involves breakdown of the mother cell and produce two or more…

Q: What is the difference between the metaphase chromosome and telophase chromosome? Metaphase…

A: A cell cycle is formed via cell development and DNA division. Cell cycle events are genetically…

Q: The cells shown in the image are from a rare species of plant and illustrate different stages of…

A:

Q: What are the three key features used to read chromosomes? Go to using karyptypes to predict genetic…

A: Given: Chromosomes are long threadlike structure that is found inside the nucleus of cell. It is…

Q: Are mutations that arise during mitosis or meiosis the same?

A: The genetic material consists of a nucleotide sequence that results in the expression of the…

Q: We are not single celled organisms and multiple cell divisions occur between fertilization and…

A: Introduction :- Gametogenesis as its name suggests , is the process of formation of mature gametes (…

Q: A person with cancer walks into the classroom.  As a biology class, we ask if we can examine some of…

A: Aneuploidy is the condition in which abnormal number of chromosomes are seen in the cell.Normally…

Q: All of the following are distinctions between the process of mitosis and meiosis EXCEPT: Group of…

A: Deoxyribonucleic acid (DNA) is an organic chemical that contains genetic information and…

Q: Which of the following statements about chromosomes and centromeres is INCORRECT?(choose the letter…

A: The chromosome consists of two identical structures called sister chromatids, which are joined…

Q: Different cells in your body (like muscle cells and brain cells) look very different and do very…

A: The nervous system is the master controlling and communicating system of the body. Every…

Q: Human cells normally have 46 chromosomes. For each of the following stages, state the number of…

A:

Q: Use the following information as the basis for answering all questions: A diploid eukaryotic…

A: As Per Bartleby Guidelines , For Further Answers Please Repost The Question. Introduction : A single…

Q: List three major CONSEQUENCES of the lack of telomeres, based upon what you know about their normal…

A: Telomere- Telomeres are distinctive structures found at the ends of our chromosomes. They are…

Q: HOW DO WE KNOW?  how chromosomes are distributed during cell division, both in dividing somatic…

A: Introduction  Almost all cells in the body can divide and form new daughter cells however, there…

Genetic Evolution

Sexual reproduction produces distinct population variations. Heredity determines the traits and qualities to be passed down to the progeny. Over time, this variation within-species is also affected by the process of human evolution. The study of how genetic variation leads to evolutionary changes is known as genetic evolution. If a trait helps an organism to survive and reproduce, it is more likely to be passed down the generations. It is rare that such traits result in a completely distinct set of traits in descendants than the ancestral population; this can result in the emergence of a new species.