Each human cell has 23 pairs of chromosomes, 1 of them this type rated XX or XY
572128
Jeopary Questions page 1056 - GENETICS - TriviaBistro.com  GENETICS: Each human cell has 23 pairs of chromosomes, 1 of them this type rated XX or XY  GENETICS: Each human cell has 23 pairs of chromosomes, 1 of...
572129
How many chromosomes do people have? - Genetics Home ...  6 days ago ... In humans, each cell normally contains 23 pairs of chromosomes, for a ... have two copies of the X chromosome, while males have one X and...
572130
This question originally aired on November 15 - Jeopardy Questions  Category: GENETICS Question: Each human cell has 23 pairs of chromosomes, 1 of them this type rated XX or XY Answer: Sex chromosome
572131
Basic Genetics > Genetics > HoG Handbook > Hemophilia of Georgia  Every human being starts as one cell, the cell formed when a woman's egg is fertilized by a man's ... There are 23 pairs of chromosomes (46 total) in each cell. ... This first cell has 46 chromosomes, 23 from the mother and 23 from the father. ... Since the sex chromosome that is made is XY, the cell will grow into a boy baby.
572132
Genetics - NHS Choices  In humans, each cell in the body contains 23 pairs of chromosomes  46 in total. ... chromosome (XY) will be male, and those without a Y chromosome will be female (XX). ... Occasionally, individuals inherit more than one sex chromosome. ... It's the largest project of its type in the world. ... Ratings. How helpful is this page?
284305
Karyotype - Wikipedia  A karyotype is the number and appearance of chromosomes in the nucleus of a eukaryotic cell. ... The basic number of chromosomes in the somatic cells of an individual or a species ... question: how many chromosomes does a normal diploid human cell contain? ... The work took place in 1955, and was published in 1956.
273362
sex chromosome | genetics | Britannica.com  Sex chromosome, either of a pair of chromosomes that determine whether an individual is male or female. The sex chromosomes of human beings and other...
468325
How can two drastically different cell types share the same genes?  Mar 1, 2011 ... An undergraduate from Michigan March 1, 2011 It sounds like you are ... These cells are different because they use the same set of genes differently. ... same 20,000 or so genes, each cell can select which ones it wants to "turn on" and ... Your body would be wasting energy making proteins in places where...
193572
Basic Units of Genetic Information  Cells, Chromosomes, Genes ...  Cells, chromosomes, genes, and DNA are all carriers of genetic material. ... are and what is passed down over generations lies within these few basic genetic units. ... discoveries of several other scientists to fully understand how heredity works. .... chromosomes and, while not in every aspect identical to each other, carry the...
200580
DNA - Mindfully.org  These amino acids are then bonded together to form a protein. ... number of 76, while tomato plants have 12 pairs of chromosomes and a diploid number of 24.
443924
Cell Division - Mitosis and Meiosis | ASU - Ask A Biologist  Diploid cell: a cell with two sets of chromosomes (46 chromosomes total)... ... We call this process "cell division" and "cell reproduction," because new cells ... In human bodies, nearly two trillion cells divide every day. ... One of the key differences in mitosis is a single cell divides into two cells that are replicas of each other...
284303
The chromosome number in humans: a brief history | Learn Science ...  We did not know the correct human chromosome number in 1955, let alone were we able to detect a chromosomal abnormality. In 1956 a discovery was...
421705
meiosis | Learn Science at Scitable - Nature  Meiosis is a type of cell division that reduces the number of chromosomes in the ... Meiosis begins with a parent cell that is diploid, meaning it has two copies of each chromosome. ... Meiosis begins following one round of DNA replication in cells in the male or ... During telophase I, the chromosomes are enclosed in nuclei.
411896
Y chromosome - Wikipedia  The Y chromosome is one of two sex chromosomes (allosomes) in mammals, including humans, and many other animals. The other is the X chromosome. Y is the sex-determining chromosome in many species, since it is the presence or absence of Y that determines the male or female ..... Traits that are inherited via the Y chromosome are called holandric traits...
22241
J! Archive - Show #3852, aired 2001-05-08  An archive of clues and players for Jeopardy! show #3852. ... While we have 23 pairs of these in each cell, the fruit fly makes do with 4, only 1 of them sex-related...
528124
Meiosis and Sexual Reproduction  MITOSIS produces two cells with the same diploid (two sets) number of ... chromosomes (called monoploid or haploid); these cells are called gametes: ... in sexual reproduction, a gamete (sperm or egg) from each parent fuses (combines--called FERTILIZATION) * this produces a fertilized egg cell which is called a ZYGOTE.
216470
What Is DNA? | Wonderopolis  To understand what genes are, you must first learn about the building blocks of life: ... They're so thin and tiny that each cell in your body has about six feet of DNA thread! ... Most cells in your body have 23 pairs of chromosomes, or a total of 46. ... This winding, dual structure is known as the double helix, and it allows DNA to...
247942
Genetics 101  The Hereditary Material of Life | NIH MedlinePlus ...  There are about 30,000 genes in each cell of the human body. Together, these genes make up the blueprint for the human body and how it works. A person's ... Nearly every cell in a person's body has the same DNA. Most DNA is located in the ... A gene is the basic physical and functional unit of heredity. Genes, which are...
12968
Chapter 4: Cellular Reproduction: Multiplication by Division: Inside ...  Apr 22, 2011 ... There are two kinds of cell division: mitosis and meiosis. Mitosis is essentially a duplication process: It produces two genetically identical "daughter" cells from a single .... just as for mitosis, but instead of one cell division, there are two. ... in women is responsible for certain genetic disorders in their children.
421702
Chromosomes and DNA - The Biology Corner  1. Chromosomes are found in the nucleus 2. Chromosomes are made of ... DNA - deoxyribonucleic acid (it is the genetic code that contains all the ... Each organism has a distinct number of chromosomes, in humans, every cell ... These cells contain half the number of chromosomes as body cells and are called HAPLOID.
443922
What exactly happens during meiosis? - UCSB Science Line  The word gamete includes both egg and sperm cells. ... So meiosis separates the two chromosomes from each pair, giving each gamete only ... there are 4 copies of each chromosome in the cell that will divide to make gametes. ... Interphase: the cell has 46 chromosomes and it starts to compact the chromosomes into...