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Mendelian Genetics
Mendelian Genetics

... Terms to Know and Use • Gene – A DNA blueprint controlling synthesis of a protein • Trait - variant for a gene: i.e. a purple flower, determined by alleles • Dominant trait - expressed over recessive trait when both are present • Recessive trait - not expressed when the dominant trait is present • ...
Other Genetic Crosses
Other Genetic Crosses

... Hemophilia, coat color in cats, color blindness are some genes located on the X chromosome, thus referred to as Sex-Linked Traits. While males have an X and Y sex chromosome, females have two X’s. In cats, for example the color for their coat is located on the X chromosome. One X chromosome may have ...
Guided Notes-Genetics
Guided Notes-Genetics

... e. Sex-Linked Traits i. All ____________________ carry an ___________chromosome ii. _______________________ are XX; ______________________ carry XY iii. ______________________________________________________________________________ ___________________________________________________________________ ...
Recall Questions
Recall Questions

... Aneupoloidy: loss or gain of one or more chromosomes so that the chromosome number deviates from 2n or the normal euploid complement. Polyploidy: Gain of entire sets of chromosomes so the chromosome number changes from 2n to 3n (triploid), 4n (tetraploid), and so on. *2. Why do extra copies of genes ...
Document
Document

... 4. The next step of Mendel's experiment was to crossed tall pea plants (TT) with short pea plants (tt). The resulting plants were labeled Tt and only tall plants were produced. ...
I. Types of Genetic Disorders
I. Types of Genetic Disorders

... • Diseases caused by alleles on sex chromosomes • Autosomal Dominant • Diseases caused by dominant alleles • Autosomal Recessive • Diseases caused by recessive alleles ...
Hybrid pink and white azalea (Rhododendron sp., fam. Ericaceae)
Hybrid pink and white azalea (Rhododendron sp., fam. Ericaceae)

... 23 from the father + 23 from the mother ...
How to Make a Linkage Map
How to Make a Linkage Map

... How to Make a Linkage Map  Independent assortment occurs when genes/ chromosomes separate from each other independently  during meiosis and therefore are inherited separately from each other. This is true if the genes for the  observed phenotypes are found on different chromosomes or separated by la ...
Chapter 13 Guided Notes - Meiosis and Life Cycles
Chapter 13 Guided Notes - Meiosis and Life Cycles

... ○ The four daughter cells at the end of meiosis have only _____________________ as many chromosomes as the original parent cell. ...
file - MabryOnline.org
file - MabryOnline.org

... 49. A person who has the genetic disorder called ____________________ bleeds easily. 50. Down syndrome is caused by the presence of an extra ____________________. 51. A doctor performs a procedure called ____________________ to get cells from the fluid that surrounds a developing baby. ...
Directed Reading B
Directed Reading B

... 19. Females have two ______________________, and males have one X and one Y. 20. When males give a(n) ______________________the offspring will be male. 21. A sex-linked blood-clotting disorder found mostly in males is ______________________. ...
File
File

... chromosome. Such genes are said to be linked because they tend to be inherited together i.e. they do not segregate in accordance with Mendel’s Law of Independent Assortment. During meiosis linked genes are inherited together because they pass into the gamete, and hence the offspring, together. Durin ...
genome_map.pdf
genome_map.pdf

... OMIM: At the bottom of the report, you may see a link next to the acronym OMIM, which stands for Online Mendelian Inheritance in Man. If you click here, it will give you a nice summary of what is known about this locus, though definitely not in plain English. Not all loci will have an OMIM link. ...
Comparative mapping in cattle of genes located on human
Comparative mapping in cattle of genes located on human

... of the published nucleotide sequences of sheep or cattle genes ADCYAP1, CDH2, CYB5, DSC2, FECH, NDUFV2 and TTR, and were used to amplify the corresponding DNA fragments from bovine total genomic DNA. Primers for PAI2 gene fragments were designed on the basis of a consensus sequence of the human and ...
الشريحة 1
الشريحة 1

... inferior frontal gyrus and portions of the supplementary motor cortex. Wernicke’s area is essential for receptive language function, ...
chromosomes.
chromosomes.

... • Homologous= autosomes are homologues, meaning they are the same shape, size and carry the genes for the same traits. ...
Human Genetics
Human Genetics

... homologous chromosomes do not move apart in Meiosis I or sister chromatids do not separate during Meiosis II leaves one cell with too few chromosomes and one cell with too many. Triploids develop from the fertilization of an abnormal diploid egg, produced from the nondisjunction of all chromosomes. ...
Recitation Section 16 Recombination and Pedigrees
Recitation Section 16 Recombination and Pedigrees

... 9. Consider the pedigree below showing the inheritance of two X-linked diseases, hemophilia A and hemophilia B . Hemophilia A is due to a lack of one clotting factor, and hemophilia B is due to a lack of a different clotting factor. These two clotting factors are encoded by two different genes, loc ...
Control of Chromosome Pairing and Genome Evolution in Disomic
Control of Chromosome Pairing and Genome Evolution in Disomic

... plants from each synthetic allotetraploid were genotyped with 70 RFLP probes. An example of their results are shown in Fig. 1…why do the F2s sometimes differ from the parents? Why do the F5s sometimes differ from the F2s? All of their data are summarized in Table 1. They suggested the following mech ...
If there are “CUES” listed within the question, please USE them and
If there are “CUES” listed within the question, please USE them and

... unaffected female. (CUES: carrier, Barr bodies) 4) Women born with an extra X chromosome (XXX) are generally healthy and indistinguishable in appearance from normal XX women. What is a likely explanation for this finding? When looking at a cell of a female with XXX, what unique feature would you obs ...
Introduction The phenomenon of change in chromosome number is
Introduction The phenomenon of change in chromosome number is

... allopolyploids, and have thus contributed to a great extent in the evolution of plants. It is estimated that about 1/3rd of the present angiosperms are polyploids, and that majority of them are allopolyploids. Some of our major crops, such as wheat, brassica, cotton, tobacco, etc. are all allopolypl ...
Sex Linked Inheritance KEY
Sex Linked Inheritance KEY

... Sex-linked traits are those whose genes are found on the X chromosome but not on the Y chromosome. In humans, the X chromosomes are much larger than the Y chromosome and contains thousands of more genes than the Y chromosome. Therefore, many traits are carried only on the X chromosome. Keep in mind: ...
The nucleotide sequence of Saccharomyces cerevisiae
The nucleotide sequence of Saccharomyces cerevisiae

... encoded on this chromosome, of which 116 are on the Crick strand, and 102 (+ 3 transposon ORFs) are on the Watson strand. Of these, 66 (30.3%) have been sequenced previously. A further 68 (31.2%) have some similarity to genes in S. cerevisiae and other organisms for which some functional information ...
Chapter 14 lecture 2 ppt
Chapter 14 lecture 2 ppt

... (1902) – observed that homologous chromosomes paired during a process called meiosis which led to the Chromosomal Theory of Inheritance - chromosomes are the carriers of genetic material. ...
Bio 130 – Quiz April 4
Bio 130 – Quiz April 4

... Q. 1 – T.H. Morgan and his colleagues worked out a set of symbols to represent fly genotypes. Which of the following are representative? A. B. C. D. E. ...
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Y chromosome



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 sex of offspring produced in sexual reproduction. In mammals, the Y chromosome contains the gene SRY, which triggers testis development. The DNA in the human Y chromosome is composed of about 59 million base pairs. The Y chromosome is passed only from father to son. With a 30% difference between humans and chimpanzees, the Y chromosome is one of the fastest evolving parts of the human genome. To date, over 200 Y-linked genes have been identified. All Y-linked genes are expressed and (apart from duplicated genes) hemizygous (present on only one chromosome) except in the cases of aneuploidy such as XYY syndrome or XXYY syndrome. (See Y linkage.)
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