Is Congenital heart disease sex linked?
81211
Your question is heard to understand. Is it Sex linked ... as in whether it is male or female linked?  Nothing I have read would say that is is found nmore in one sex than another.\n\nCongenital means inborn or existing at birth. This is what I found on the site noted in the sources below:\n\n"What causes congenital cardiovascular defects?\nCongenital cardiovascular defects are present in about 1 percent of live births. They're the most common congenital malformations in newborns.  In most cases scientists don't know why they occur.  Sometimes a viral infection causes serious problems.  German measles (rubella) is an example.  If a woman contracts German measles while pregnant, it can interfere with how her baby's heart develops or produce other malformations.  Other viral diseases also may cause congenital defects.\n\nHeredity sometimes plays a role in congenital cardiovascular defects.  More than one child in a family may have a congenital cardiovascular defect, but this rarely occurs. Certain conditions affecting multiple organs, such as Down's syndrome, can involve the heart, too.  Some prescription drugs and over-the-counter medicines, as well as alcohol and "street" drugs, may increase the risk of having a baby with a heart defect.  Researchers are studying other factors."
886090
There are several types of color deficiencies, do you mean to include all? If so, then around 0.8% carry this deficiency. It is less common to women because it is a sex linked gene, carried on the X chromosome where men have one and women have two. Both X chromosomes have to be affected for women so the X from her mom must be colorblind and her dad has to be colorblind. For men, only one X chromosome has to be affected so either/or his mom has one/two affected chromosomes, or his dad is colorblind.
621951
all normal males are XY.  all normal females are XX.  the female always donates 1 X chromosome to the offspring.  the male donates either an X or a Y to the offspring (50% chance of each event).  If the male donates an X, the offspring will be XX and female.  if the male donates a Y, the offspring will be XY and male.
692190
Only if a genetically recessive trait runs in the family and both the guy and his sister have the defective chromosome, only then does the baby risk having a birth defect or mental retardation - even then(ie, with the defective recessive chromosome in both), the chance would be 1 abnormal child out of 4. If the guy and the sister have no such defective chromosomes, then the question of an abnormal/retarded child does not arise.\n\nIf, however, a genetically dominant trait runs in the family and either the guy or his sister have the defective chromosome, then the risk increases to 1 in 2  and if both have it, then the risk is 3 out of 4.\n\nIn any case, whether the baby will be normal or abnormal cannot be determined until a karyotyping of both the guy and his sis is done. Having said that, the rate of such disorders is quite low and in all probability, the child will be normal.
233009
Not necessarily heart attacks,but heart disease has been proven to have genetic factors. There are many things that go into a persons genetic make-up and it gets very technical. If you are concerned,see a cardiologist or a geneticist to help you get your questions and/or fears answered properly.
731941
Since gender/sex is not dependent upon genetics, there is always a 50/50 chance or 50% probability that the child will be one sex. Use that to narrow down the eye color chances for those questions.
300797
yes, males have slightly higher volumes in their hearts and a slightly lower pulse rate. Sorry no sources, ask a nurse.
982972
Klinefelter's syndrome, 47XXY or XXY syndrome is a condition caused by a chromosome nondisjunction in males; affected individuals have a pair of X sex chromosomes instead of just one, and are associated with additional risk for some medical conditions. It is named after Dr. Harry Klinefelter, a medical researcher at Massachusetts General Hospital, Boston, Massachusetts, who first described this condition in 1942.[1]\n\nXXY males are almost always sterile, and some degree of language impairment may be present. In adults, possible characteristics vary widely and include little to no signs of affectedness, a lanky, youthful build and facial appearance, or a rounded body type with some degree of gynecomastia (increased breast tissue). Gynecomastia to some extent is present in about a third of individuals affected, a higher percentage than in the XY population. The far end of the spectrum is also associated with an increased risk of breast cancer, pulmonary disease, varicose veins, diabetes mellitus, rheumatoid arthritis, and osteoporosis, risks shared with women.\n\nRare X-linked recessive problems occur even more infrequently in XXY males, since these conditions are transmitted by genes on the X chromosome, and people with two X chromosomes are typically carriers rather than affected.\n\nThere are many variances within the XXY population, just like in the 46,XY population. While it is possible to characterise 47,XXY males with certain body types, that in itself should not be the method of identification as to whether someone has 47,XXY or not. The only method of identification is karyotype testing.
664657
Probably not...some heart valve problems are hereditary, but if his was caused by the disease, chances are , in this case, it is not.
802960
The women and the man would have a heterozygous geneotype\n\nThe woman's genotype would consist of a gene for B blood and for O blood.\nThe man's genotypes would consist of a gene for A blood and B blood.  \n\nSince O is a ressisve gene, A and B would dominiant the blood type for their children who could have an A, B or AB blood type.  \n\nFollowing a basic 2 x 2 Punnett square, the statistics of a child getting a homozygous B blood type would be 1/4; a AB blood type would be 1/4; for getting a heterzygous A or B blood type with a ressive O gene would be 2/4 or 1/2.
463347
I believe eye color is sex linked.  I think wing structure is too (like normal versus vestigial).
168198
Actually, the odds are not 50:50.  The chances are 51.4 male to 48.6 female.  So the odds are slighly in favor of a boy.\n\nhttp://www.ourstolenfuture.org/NewScience/reproduction/sexratio/sexratio.htm\n\nAs people have said, the births are not connected so outcome of each event is independent.  So each birth event would seem to have the same likelihood as any other birth event.\n\nHowever, there may be individual factors which are not accounted for in this study.  We have several friends who have all girls.  3 girls in one family, 4 in another. While statistically plausible, and I haven't found any specific studies on this, I'm betting that there are heredity and environmental factors that are involved. Certainly their's some interest in why the birth rates of certain countries deviate significantly from the norm.\n\nHere's another website that talks about ways of modifying your behavior that might increase the odds of a boy or a girl.  It's not scientific but in the quote: "Dr. Moore also notes in his book that selecting a child's gender shouldn?t be taken too seriously, but he thinks using his methods make trying that much more fun."\n\nhttp://preconception.com/resources/articles/tochance.htm\n\nOf course, if you choose to adopt and make a proactive choice of gender (boy or girl), you have a much strongest choice of influencing the odds.
912386
Fragile X is a serious genetic disorder.  It is caused by mutation of the X chromosome.  The outcome can be significant and debilitating.  It can affect males and females differently.  Males may have enlarged ears, large testicles, long face, and skeletal problems.  This is along with hearing loss, speech issues, and ADD issues as well.  Both will have cognitive delays.  Women have similar physical issues as the men, but usually not as severe.
774901
Some diseases are carried on the x chromosome and others on the y.
821644
Is sex-linked. Sex linkage by definition involves all traits located on the sex chromosomes. Sex linkage doesn't mean that only males can be colour-blind, but it means that the sex of a child influences its chance to have that trait.\n\n(BTW "the" allele for colour blindness is crap... a normal human actually has 3 colour vision genes, two of these - "red" and "green" - on the X chromosome; meaning several types of colour blindness. A red or green can simply be left out when X chromosomes exchange DNA in egg cell formation, or you can have defective versions of either gene. As the third gene, that which codes for the blue receptor pigment, is located on another chromosome, there exists non-sex-linked colour blindness as well.)
581875
C... a boy would have XY chromosomes and a female would have XX chromosomes.  Y is always smaller than X.
290171
Super Male Syndrome is the XYY syndrome! \n\nXYY syndrome \n\nDefinition\nXYY syndrome is a chromosome disorder that affects males. Males with this disorder have an extra Y chromosome.\n\nDescription\nThe XYY syndrome was previously considered the super-male syndrome, in which men with this condition were thought to be overly aggressive and more likely to become criminals. These original stereotypes came about because several researchers in the 1960s found a high number of men with XYY syndrome in prisons and mental institutes. Based on these observations, men with XYY syndrome were labeled as overly aggressive and likely to be criminals.\n\nThese original observations did not consider that the majority of males with XYY syndrome were not in prisons or mental institutes. Since then, broader, less biased studies have been done on males with XYY syndrome. Though males with XYY syndrome may be taller than average and have an increased risk for learning difficulties, especially in reading and speech, they are not overly aggressive. Unfortunately, some text books and many people still believe the inaccurate stereotype of the supermale syndrome.\n\nGenetic profile\nChromosomes are structures in the cells that contain genes. Genes are responsible for instructing our bodies how to grow and develop. Usually, an individual has 46 chromosomes in his or her cells, or 23 pairs. The first 22 pairs are the same in males and females and the last pair, the sex chromosomes, consist of two X chromosomes in a female, and an X chromosome and an Y chromosome in a male.\n\nXYY syndrome occurs when an extra Y chromosome is present in the cells of an affected individual. People with XYY syndrome are always male. The error that causes the extra Y chromosome can occur in the fertilizing sperm or in the developing embryo.\n\nXYY is not considered an inherited condition. An inherited condition usually is one in which the mother and/or father has an alteration in a gene or chromosome that can be passed onto their children. Typically, in an inherited condition, there is an increased chance that the condition will reoccur. The risk of the condition reoccurring in another pregnancy is not increased above the general population incidence.\n\nDemographics\nXYY syndrome has an incidence of one in 1,000 newborn males. However, since many males with XYY syndrome look like other males without XYY syndrome, many males are never identified.\n\nSigns and symptoms\nThere are no physical abnormalities in most males with XYY syndrome. However, some males can have one or more of the follwing characteristics. Males who have XYY syndrome are usually normal in length at birth, but have rapid growth in childhood, typically averaging in the 75th percentile (taller than 75% of males their same age). Many males with XYY syndrome are not overly muscular, particularly in the chest and shoulders. Individuals with XYY syndrome often have difficulties with their coordination. As a result, they can appear to be awkward or clumsy. During their teenage years, males with XYY syndrome may develop severe acne that may need to be treated by a dermatologist.\n\nMen with XYY syndrome have normal, heterosexual function and most are fertile. However, numerous case reports of men with XYY syndrome presenting with infertility have been reported. Most males with XYY syndrome have normal hormones involved in their sperm production. However, a minority of males with XYY syndrome may have increased amounts of some hormones involved in sperm production. This may result in infertility due to inadequate sperm production. As of 2001, the true incidence of infertility in males with XYY syndrome is unknown.\n\nWhen XYY men make sperm, the extra Y chromosome is thought to be lost resulting in a normal number of sex chromosomes. As a result, men with XYY syndrome are not at an increased risk for fathering children with chromosome abnormalities. However, some men with XYY syndrome have been found to have more