Although there can be individuals born with only a single X chromosome, there are not individuals born who have no X chromosomes. With what you know, why do you think this might be?

Q: thought 2 was 4%? Why is telophase 5%?

A: Mitosis The the mechanism by which somatic parent cells divide into two exact copy of daughter cell.

Q: What does an extra chromosome 16 mean?

A: Chromosomes, the physical carriers of genes, are the microscopic thread like structures in which the…

Q: Sickle-cell disease is an inherited chronic blood disease caused by an autosomal recessive allele.…

A: Sickle cell anemia is an inherited red blood cell disorder in which the body's supply of healthy red…

Q: I have a doubt, I'm not sure if the chromosomes are a boy or a girl? Or if the chromosomes have any…

A: Monosomy is an aneuploidy in which only one of a pair of chromosomes is present. When a section of…

Q: Mules result from a cross between a horse (2 n = 64) and a donkey (2 n = 62), have 63 chromosomes,…

A: Meiosis is the process through which gametes are formed. It includes a reduction in the number of…

Q: Why are there no humans with monosomy 22? because chromosome 22 is very small, it is very stable and…

A: The correct option is shown below.

Q: A female is heterozygous for an X-linked gene.  If nondisjunction happens for the sex chromosomes…

A: Introduction :  Aneuploidy is the term used to describe a cell that has an abnormally high/low…

Q: For a certain chromosomal region, the mean number of crossovers at meiosis is calculated to be two…

A: In the meiotic cell division process, a single germ cell divides twice to produce four non-identical…

Q: You have discovered a new X-linked gene in chimpanzees (Chimpanzees have the same sex chromosomes as…

A: Sir Gregor Mendel was a priest and a teacher who did the famous hybridization experiment on garden…

Q: Look at the X-chromosome fact sheet. About how much bigger than the Y chromosome is the X…

A: The X chromosome is considerably larger than the Y chromosome, both in terms of physical size and…

Q: Stephanie conducts an experiment to study sex reversal in a specific grographic location. She…

A: Females are born with two X chromosomes. Female somatic cells are not involved in sexual…

Q: A cat is born with two X chromosomes and one Y chromosome. One of the X chromosomes carries the…

A: The fur color of the cats are generally controlled by genes present on the X-chromosome. One form of…

Q: Let’s suppose that you have made a karyotype of a female fruit flywith red eyes and found that it…

A: As per question, there are three different eye colors X-linked alleles prevailing in the population…

Q: Fetuses whose cells are triploid, that is, contain three full sets of chromosomes, develop to term…

A: INTRODUCTION The DNA molecule is packed into thread-like structures called chromosomes in the…

Q: Trisomy 21, or Down syndrome, occurs when there is a normal diploid chromosomal complement but one…

A: The DNA (deoxyribonucleic acid) is the hereditary unit of an organism. DNA is formed of the…

Q: Why is an X chromosome needed for survival?

A: The sex chromosomes or allosomes are X and Y chromosomes which determine the biological sex of an…

Q: Suppose you discover two interesting rare cytological abnormalities in the karyotype of a human…

A: To find: To find the proportion that has the same karyotype using the given pair of chromosomes

Q: The X chromosome has a lot of traits for things besides the traits we consider female. It carries…

A: If a parent is XY then the parent can give only Y chromosome to its XY offspring as this offspring…

Q: Hemophilia is a recessive disease carried on the X chromosome. If an unaffected carrier mother had…

A:

Q: The other difference in alleles stems from the fact that our 23rd chromosome pair is unique. This…

A: Sex chromosomes determine the sex of an organism. An individual with XX- will be a girl. An…

Q: What is the end result of crossing over?

A: Crossing over allows the exchange of genetic material and forms unique combinations of alleles. This…

Q: Color blindness is an X-linked recessive trait. An XX female can be colorblind in one eye due to…

A: X chromosome inactivatiom is a random process. Either of the X chromosome is inactivated in human in…

Q: How come the conclusion came to be as half of the son and none of the daughter have precorious…

A: It is a condition in which a child's body changes in an adult too soon before pubery.

Q: What does an extra 22 chromosome mean?

A: Chromosome is the DNA molecule with part or all of the genome (genetic material) of an organism. In…

Q: Considering an organism with three pairs of homologous chromosomes, how many different kinds of…

A: Answer : Since there are 3 pairs of homologous chromosomes, therefore  2N = 6 N = 3  to Calculate…

Q: Part C is actually 13 chromosomes in a cell of a pea plant that is monosomic for a single…

A: Chromosomal abnormality is a condition in which there is alterations in chromosome number and…

Q: What is the total number of chromosomes you receive from both parents?

A: Alleles are considered as the variant of the gene. DNA is composed of different nucleotides that…

Q: Unlike mammals, birds lack XY chromosomes. Instead, birds have a ZW system, where males have two Z…

A: Chromosomes are the condensed form of genetic material (DNA) that possesses the hereditary units…

Q: You are an allele on a single uncondensed chromosome in a Yellow fever-carrying mosquito (Aedes…

A: The somatic cells follow the mitotic process for division and the reproductive cells or gametes are…

Q: Discuss the following concepts: (a) homologous chromosomes x ½ = 2) (b) diploidy (c) haploidy

A: Chromosomes are defined as the bundles or groups of tightly and highly coiled DNA located within…

Q: What does it mean if you have 24 chromosomes?

A: Chromosomes are a compact form of DNA wrapped around some proteins and are generally present in a…

Q: This is the only combination of sex chromosomes that is lethal XXy (47) y-only (45) Xyy (47) X-only…

A: Changes in chromosome number (gains and losses) and changes in structure are examples of chromosome…

Q: Can someone explain this? When you cross female flies with white eyes to male flies with red eyes,…

A: Cross occurs between white eyes females XwXw x red eyes males XWY. Red is a dominant character over…

Q: Which of the following is true for autosomal recessive alleles associated with a disease? One copy…

A: Traits can be autosomal or sex linked and dominant or recessive.

Q: In Chapter 2, we learned that the two chromosomes of a homologous pair carry information for the…

A: Thread like structures present inside the nucleus of a cell is known as chromosomes. These are…

Q: What would happen if X and Y engage in genetic recombination that happens in a region of Y that…

A: The SRY gene, also known as the sex-determining region Y gene, is a gene on the Y chromosome in…

Q: Which of the following statements best describes an individual whose genetic make-up is shown below?…

A: Chromosomes are thread like structure present in the nucleus of cell. These are the hereditary…

Mitochondrial Mutations

A mitochondrion is a cellular organelle that serves as the site for cellular respiration and energy production (ATP or Adenosine Triphosphate). It is a double-membrane-bound organelle and is only present in eukaryotic cells.