Why is the chances of having a child with down's syndrome increases if the age of mother exceed forty year?

Q: Dick has red green color blindness.  Debi does not have color blindness and is homozygous for this…

A: The functional unit of inheritance is called a gene. Genes are the sequence of nucleotides that are…

Q: What are the influences disease may have on emotional, mental, and physical development when a child…

A: Cystic fibrosis is a multi systemic life limiting disorder of genetics.It majorly impact the…

Q: what is most likely the sex of this individual?

A: In uman the total chromosome number is 46 or 23 pairs. It is the diploid number of chromosomes.…

Q: According to Figure 1, what is the probability that that next child of the couple marked with an…

A: Osteoporosis is a disease of bone caused by a shortage of calcium and other minerals in bones which…

Q: A couple is both heterozygous for the autosomal recessive disease cystic fibrosis (CF). What is the…

A: Autosomal recessive inheritance pattern is a type of inheritance pattern in which the disease is…

Q: What is Patient A's karyotype? A. Down syndrome B. Patau syndrome C. Klinefelter syndrome D.…

A:

Q: Why are older expectant mothers routinely given amniocentesis or CVS

A: According to the question, we have to the explanation on older expectant mothers routinely given…

Q: What is meant by Birth complications ?

A: Labour is the process of giving birth to the baby and bring out the product of conception to the…

Q: Given this history only, what are the chances that their child will have cystic fibrosis? Is there…

A: Question - Given this history only , what are the chances that their child will have cystic fibrosis…

Q: How is prenatal diagnosis of Down syndrome achieved?

A: Genetic disorders result from chromosomal abnormalities like Down syndrome and Turner syndrome. A…

Q: does Turner syndrome more common in males or females?

A: Set of certain symptoms related to underlying genetic characteristics of an organism resulting in a…

Q: Describe the common congenital abnormalities in malesand females.

A: Congenital abnormalities are also called congenital abnormalities, congenital disorders, or birth…

Q: In autosomal dominant disorders, the recurrence risk is ¾(75%) when one affected parent and one…

A: When a child receives one version of a mutant gene from one parent, autosomal dominant inheritance…

Q: Huntington’s disease is a dominant disorder. Suppose that Kent and Alice are both heterozygous for…

A: Huntington's disease [HD] is a brain disorder. This disease is caused by the defective gene present…

Q: What is the female version of Turner syndrome?

A: Mendelian disorders like haemophilia, sickle- cell anemia, and phenylketonuria are due to the mutant…

Q: Explain the NIMBY syndrome and its impact

A: NIMBY  NIMBY or not in my backyard is a term which is used to describe people who work in their own…

Q: Why do most cases of Down syndrome originate from the mother? And how is this linked to maternal age…

A: Down syndrome also called "trisomy 21" is a condition in which a child is born having an additional…

Q: what are treatments for polycystic overy syndrome?

A: Polycystic ovary syndrome is the condition of ovary in which the follicles are solidified to form…

Q: What are some facts about XXY syndrome? at least 5

A: Chromosome abnormalities are the disorder in which an individual possess more or reduced number of…

Q: A haemophilic man marries a normal homozygous woman. What is the probability that their daughter…

A: Hemophilia is X-linked recessive disorder. It is generally caused by a mutation in the genes which…

Q: What is syndrome ? Name three syndromes

A: Disease is defined as any deviation from the normal physiologic function or structure of organism.…

Q: What is a down syndrome?

A: Humans are diploid organisms,i.e., humans will have two copies for each chromosome in the cells. One…

Q: If a women has 5 children, all of which are girl…what is the probability that the 6th child will…

A: The sex of the off-spring depends on the male gamete that fuses with the female gamete. As males…

Q: Is a person’s sex identity established at the moment of conception? Explain how?

A: Each individual has chromosomes (23 pairs), among them 22 are identical, one which is sex chromosome…

Q: If one person with the trait of Huntington's disease (H h) has 2 children with a partner who does…

A: INTRODUCTION Huntington's disease It is an inheritable disease in which nerve cells in the brain…

Q: What is the male version of Turner syndrome?

A: Step 1 Turner’s syndrome (44+XO), the individual appears phenotypically females. The effect appears…

Q: Give some examples for down syndrome

A: Genes are housed in chromosomes, which are structures. Numerical or structural chromosomal…

Q: What condition do the following characteristics describe? predominant in males-varying degrees of…

A: Syndrome is a group of medical signs and symptoms which are correlated with each other and some time…

Q: If individuals III-12 & III-16 seek an advice that if they marry, what is the probability of having…

A: Population genetics studies the inheritance of a trait from the parental generation to the…

Q: What is the probability that the child indicated by the question mark will have both disorders?

A: Answer : Let us assume Gg representing allele for Grey's disorder and Oo being the allele for Orange…

Q: Why is a genetic predisposition suggested for testicular cancer?

A: Testicular cancer is hereditary. It passes from parent to offspring. Many genes alteration are…

Q: Is there a reason why polyovarian cysts May clear after having a baby

A: Polycystic ovarian syndrome (PCOS) it is a hormonal disorder. This mainly affects the fertility of…

Q: How do you know if disorder is autosomal or sex linked?

A: The autosomal inheritance is a pattern that involves the transmission of traits produced by the gene…

Q: Q1

A: Let the gene be RB and rb. Mother is homozygous dominant RBRB- X RBXRB Father is normal- XrbY   X…

Q: Charles was married once before and he and his first wife had a child with cystic fibrosis. The…

A: Cystic fibrosis is an autosomal recessive disease.  It is a genetically inherited disease.

Q: A couple (Aa x Aa) decides to have a child, what is the probability that their first child is female…

A: "Genetics" is the study of the functioning and main codes of variation and heredity. Inheritance is…

Q: what are the types of down syndrome

A: Down syndrome is a condition in which a person has an extra chromosome. people with Down syndrome…

Q: explain what is Down syndrome?

A: Genetic disorder are caused due to the absence or excess or abnormal arrangement of one or more…

Q: What are the various phenotypic changes in cri du chat syndrome ?

A: A syndrome is a medical condition in which a group of symptoms appears. These symptoms are generally…

Q: Show the relationship between the incidence of children born with Down syndrome and maternal age ?

A: Genetic Disorders are the type of disorders when DNA abnormality is inherited. Down syndrome is a…

Q: What is 47,XXX Syndrome ?

A: A syndrome is characterized by a collection of medical indications and symptoms that are related to…

Q: Two albinos marry and have four normal children. Howis this possible?

A: Introduction Albinism is a genetic condition that causes a person's skin, hair, and eyes to be…

Q: Define these pairs of terms, and distinguish between them. Patau syndrome/Edwards syndrome

A: Some chromosomal disorders are caused due to change in the number of chromosomes in the offspring.…

Q: Two normal parents have a child with cyatic fibrosis. Would this be an autosomal dominant or…

A: Cystic fibrosis is a life-threatening condition that is passed from parents to offsprings in which…

Q: Are all forms of Down syndrome due to non-disjunction?​YES​​​ or NO​?

A: Down syndrome is a genetic disorder caused when abnormal cell division results in an extra full or…

Q: What is the chance that a child of III-1 and III-4 will have the disease?

A: Pedigree is a family tree drawn with standard genetic symbol representing the ancestry of an…

Q: Differentiate a multifactorial disorder from a chromosomal disorder.

A: Multifactorial diseases are not confined and do not follow any specific pattern of single gene…

Inheritance and Mendelian Genetics

Inheritance means the passing of traits to offspring from parents. These traits could be passed either through asexual reproduction or sexual reproduction. The offspring receives the genetic material from the parents. Mendelian inheritance is a certain biological inheritance that follows the rules and principles laid down by Gregor Mendel in 1865. The initial hypothesis was considered wrong, but other inheritance theories modified the concept of inheritance and thus genetics.