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Introduction to genetics - Wikipedia

en.wikipedia.org/wiki/Introduction_to_genetics

A long molecule that looks like a twisted ladder. It is made of four types of simple units and the ... Genes are made up of molecules inside the nucleus of a cell that are strung ... sperm in males ...

The number of chromosomes in a nucleus depends upon the female ...

www.answers.com/Q/The_number_of_chromosomes_in_a_nucleus_depends_upon_the_female_only

The number of chromosomes in a nucleus depends upon the female only? ... What disorder does a female have if she inherits only one X chromosome?

Basic Genetics > Genetics > HoG Handbook > Hemophilia of Georgia

www.hog.org/handbook/section/2/basic-genetics

These are the eggs in a woman and the sperm in a man. They only have 23 ... The chromosomes are kept in a special part of the cell called a nucleus. If you had a very ... An egg or sperm only has half of the parent's sex chromosome pair. An egg will ... What type the person has depends on which gene has the defect.

Chromosomes: Your Genetic Blueprint : Ingender.com

www.ingender.com/gender-info/Conception2.aspx

If you're a human, 46 is the magic number: we have 46 chromosomes, in 23 matched pairs. ... genetic blueprint, or your genome, in the 46 chromosomes in its nucleus. ... pairs of chromosomes, an egg or sperm has only 23 single chromosomes. ... eye color, and of the color of your eyes depends on which gene is dominant.

Chromosome - What's a Genome?

www.genomenewsnetwork.org/resources/whats_a_genome/Chp1_2_1.shtml

Jan 15, 2003 ... ... like bits of fat thread, and are kept in the nucleus, a sphere-shaped sac within the cell. ... Exactly how many chromosomes we are talking about depends on the species. ... and thousand ways to purringly manipulate human beings, have only 38. ... In humans, a female has two identical sex chromosomes.

Chromosomal Sex Determination in Drosophila - Developmental ...

www.ncbi.nlm.nih.gov/books/NBK10025/

If there are two X chromosomes in a diploid cell (2X:2A), the fly is female ... This can happen when an X chromosome is lost from one embryonic nucleus. ... Such mutations have no effect on sex determination in XY males. ... a particular embryonic type of Sxl mRNA that is found for only about 2 hours more (Salz et al. 1989).

DNA that only females have -- ScienceDaily

www.sciencedaily.com/releases/2015/06/150604084511.htm

Jun 4, 2015 ... ... other animals with a W chromosome seems instead to depend upon the number of ... "This is because it is only inherited on the maternal side and fewer ... Males produce a vastly greater number of germ cells than females and so ... The W chromosome is the only chromosome from the cell nucleus which ...

DNA which only females have - Phys.org

phys.org/news/2015-06-dna-females.html

Jun 4, 2015 ... If there is no Y chromosome, the organism will be a female. ... with a W chromosome seems instead to depend upon the number of ... The W chromosome is the only chromosome from the cell nucleus which is inherited on the ...

All about genetics | Contact a Family

www.cafamily.org.uk/medical-information/patterns-of-inheritance/

This number of chromosomes is known as the 'diploid' number. ... Inheritance will depend upon the arrangement of the genes on our chromosomes and the ... Autosomal inheritance means that males or females are equally affected, this is .... is passed on through the egg but not by the sperm as it is only the nucleus of the .....

BEHAVIOUR OF ACCESSORY RYE CHROMOSOMES IN THE ...

onlinelibrary.wiley.com/doi/10.1111/j.1601-5223.1948.tb02826.x/pdf

junction, with the result that the generative nucleus of most pollen grains has ... plants one can only rarely find a plant having an odd number of frag- ments. ... female side. ... this might depend on th'e absence of fragment chromosomes in the.