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    Monosomic females with rudimentary ovaries and lacking secondary sexual characters suffer from .

    Monosomic females with rudimentary ovaries and lacking secondary sexual characters suffer from .

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    Monosomic females with rudimentary ovaries and lacking secondary sexual characters suffer from .

    Question

    Monosomic females with rudimentary ovaries and lacking secondary sexual characters suffer from _____________.

    A Turner’s syndrome B

    Klinefelter’s syndrome

    C Down’s syndrome D Edwards syndrome Open in App Solution

    The correct option is A Turner’s syndrome

    Turner’s syndrome is a chromosomal disorder in human beings characterised by the absence of one of the X chromosomes in the females. Normal females have two X chromosomes. The affected females are sterile with rudimentary ovaries and lack secondary sexual characters.

    The absence of one chromosome is called monosomy (2n-1) and females exhibiting monosomy are called monosomic females.

    Klinefelter’s syndrome is a chromosomal disorder characterised by the presence of an extra X chromosome in the human males and hence the affected individuals have three sex chromosomes (XXY).

    This condition is termed as trisomy of sex chromosomes.

    The affected individuals display overall masculine development, however, the feminine characters like development of breast, i.e., gynecomastia are also seen. The affected individuals are sterile.

    Down’s syndrome is a chromosomal disorder which is characterised by the trisomy of the

    21 s t

    chromosome. The affected individuals have a short stature with rounded head, furrowed tongue, wide palm with distinct palm crease and retarded physical, mental and psychomotor development.

    Edwards syndrome, a chromosomal disorder which is characterised by the trisomic condition of chromosome 18. The affected individuals have small and abnormally shaped head and jaws, arched spine, and birth defects in many organs.

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    SIMILAR QUESTIONS

    Q. A organism in which shows the secondary sexual characters of both male and female is called asQ.

    Which of the following is not a primary sexual characteristic in females ?

    (a) fallopian tubes (b) ovaries (c) seminal vesicles (d) vagina

    Q. Which among the following is a secondary sexual character in females?Q. Phenotypically, females having rudimentary ovaries, underdeveloped breasts, short stature, webbed neck, often with subnormal intelligence suggest:Q. What is the difference between klinefelter syndrome and homosexuality?

    A person affected with klinefelter syndrome shows secondary characters of male or female???

    View More

    स्रोत : byjus.com

    Absence of one sex chromosome causes

    Click here👆to get an answer to your question ✍️ Absence of one sex chromosome causes

    Question

    Absence of one sex chromosome causes

    A

    Turner's syndrome

    B

    Klinefelter's syndrome

    C

    Down's sundrome

    D

    Tay-Sach'ssyndrome

    Easy Open in App

    Updated on : 2022-09-05

    Solution Verified by Toppr

    Correct option is A)

    Absence of one sex chromosome causes Turner’s syndrome. This disorder is due to monosomy (2n-1). It appears due to fusion of abnormal egg (22 + 0) and a normal sperm (22 + X) or a normal egg (22 + X) and abnormal sperm (22 + 0). People suffering from Turner’s syndrome have 45 chromosomes instead of 46 chromosomes. Such females are sterile as ovaries are rudimentary besides other features including lack of other secondary sexual characters.

    Solve any question of Principles of Inheritance and Variation with:-

    Patterns of problems

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    स्रोत : www.toppr.com

    Turner Syndrome: Causes, Symptoms, Diagnosis & Treatment

    Turner syndrome is a genetic disorder affecting females. Symptoms include short stature. Treatment can help people have a good quality of life.

    Turner Syndrome

    Turner syndrome is a genetic disorder affecting girls and women. The cause of Turner syndrome is a completely or partially missing X chromosome. Turner syndrome symptoms include short stature and lack of breast development and periods. Treatment for Turner syndrome may include hormone therapy.

    OVERVIEW

    What is Turner syndrome (TS)?

    Turner syndrome (TS), sometimes referred to as congenital ovarian hypoplasia syndrome, is a genetic disorder. It is the most common sex chromosomal abnormality affecting girls and women. More specifically, it’s a problem with one of the two X chromosomes -- the thread-like structures inside cells that are made of DNA. We get our DNA from our parents and it is the DNA that contains the specific instructions that make each living creature unique!

    Turner syndrome is a congenital condition, meaning it's something a person is born with. Each of us is born with two chromosomes. If you're female, you were born with two X chromosomes. If you're a male, you are born with one X and one Y chromosome. Turner Syndrome occurs when one of the X chromosomes is missing, either partially or completely.

    Turner syndrome often causes short stature, typically noticeable by age 5. It usually doesn’t affect intelligence but can lead to developmental delays especially with calculations and memory. Heart problems are common, too. While TS can somewhat shorten life expectancy, screening for and treating known related conditions helps protect health.

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    Is Turner syndrome inherited?

    Turner syndrome is a genetic disorder, but it’s usually not inherited, except in rare cases. An inherited genetic condition means that a parent (or both parents) passed down a mutated, or changed, gene. In Turner syndrome, the chromosome change happens randomly before birth.

    What are the types of Turner syndrome?

    The type of Turner syndrome (TS) a person has depends on the problem with the X chromosome:

    Monosomy X: Each cell has only one X chromosome instead of two. About 45% of people with TS have this type. It comes from the mother’s egg or the father’s sperm randomly forming without an X chromosome. After fertilization, the baby’s cells also contain this defect.Mosaic Turner syndrome: Also called 45,X mosaicism, this type makes up about 30% of Turner syndrome cases. Some of the baby’s cells have a pair of X chromosomes, while other cells only have one. It happens randomly during cell division early in pregnancy.Inherited Turner syndrome: In rare cases, babies may have inherited TS, meaning their parent (or parents) were born with it and passed it on. This type usually happens because of a missing part of the X chromosome.

    How common is Turner syndrome?

    Worldwide, about 1 in every 2,500 female babies is born with Turner syndrome. It’s the most common sex chromosomal abnormality found in women.

    SYMPTOMS AND CAUSES

    What causes Turner syndrome?

    Turner syndrome happens when one of a female baby’s two X chromosomes is missing or incomplete. Researchers don’t yet understand why this happens.

    What are the symptoms of Turner syndrome?

    The main symptom of Turner syndrome is short stature. Almost all females with TS:

    Grow more slowly than their peers during childhood and adolescence.

    Have delayed puberty and lack of growth spurts, resulting in an average adult height of 4 feet, 8 inches. (If diagnosed early, growth hormone can help the person reach near-normal height).

    Another symptom is not experiencing typical sexual development. Most females with TS:

    Don't experience breast development.

    May not have menstrual periods.

    Have small ovaries that may only function for a few years or not at all.

    Typically don't go through puberty, unless they get hormone therapy in late childhood and early teens.

    Don't make enough sex hormones.

    Besides short stature, females with Turner syndrome often have certain physical traits:

    Broad chest.

    Cubitus valgus, where the arms point out slightly at the elbows.

    Dental problems.

    Eye problems, such as a lazy eye or drooping eyelids.

    Scoliosis, when the spine curves sideways.

    Low hairline at the back of the neck.

    Many skin moles.

    Missing knuckle in a particular finger or toe, making the digit shorter.

    Narrow fingernails and toenails.

    Small lower jaw.

    Swelling of the hands and feet.

    Unusually short, wide neck or webbed neck (extra skin folds).

    What other medical problems might people with Turner syndrome have?

    Cardiovascular problems

    People with Turner syndrome (TS) may have heart and blood vessel problems, some of which can be life-threatening. Up to 50% of people with TS have a problem with the structure of their hearts. Cardiovascular problems can include:

    Bicuspid aortic valve, with two valve leaflets instead of three.

    Coarctation of the aorta, when part of the aorta is too narrow.

    Elongation of the aortic arch, a section of the body’s main artery.

    Hypertension (high blood pressure).

    Bone problems

    These are also common with TS. People with Turner syndrome should exercise and get enough calcium and vitamin D for healthy bones. Bone problems include:

    स्रोत : my.clevelandclinic.org

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