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What are the sex chromosomes of male human being?
Normal male humans have the sex chromosomes XY. The presence of the Y chromosome determines sex in humans - so a person with XXY will be male.
Why must the sex cells have half the chromosome number of the normal body cells?
Sex cells must have half the chromosome number of normal body cells because during fertilization, when sperm and egg cells join, the resulting zygote will have the correct chromosome number. This ensures genetic diversity in offspring and helps maintain the stability of the species' chromosome number.
Is a triploid chromosome viable in humans?
Triploid chromosome (69 total chromosomes instead of 46) is not viable in humans and typically results in miscarriage. It is considered a lethal condition due to the abnormal number of chromosomes, which disrupts normal genetic function and development.
What is the normal male genotype?
It has the same number of chromosomes as an adult, that is 23 pairs.
What is trisomy mutation?
A trisomy is when a person has 3 versions of a chromosome. 'Normal' humans will only have 2 of each chromosome. For example, having 3 versions of chromosome 21 is known as Trisomy 21 or Down Syndrome.
What are the sex chromosomes of male human being?
Normal male humans have the sex chromosomes XY. The presence of the Y chromosome determines sex in humans - so a person with XXY will be male.
Why must the sex cells have half the chromosome number of the normal body cells?
Sex cells must have half the chromosome number of normal body cells because during fertilization, when sperm and egg cells join, the resulting zygote will have the correct chromosome number. This ensures genetic diversity in offspring and helps maintain the stability of the species' chromosome number.
Hemophilia in humans is due to an X-chromosome mutation What will be the results of mating between a normal non-carrier female and a hemophiliac male?
In a mating between a normal non-carrier female (XX) and a hemophiliac male (XY), all daughters will inherit one X chromosome from their father, which carries the hemophilia mutation, making them carriers (XhX). However, none of the daughters will express hemophilia because they will also inherit a normal X chromosome from their mother. All sons will inherit the Y chromosome from their father and a normal X chromosome from their mother, resulting in normal, non-hemophiliac males (XY). Thus, the offspring will have carrier daughters and normal sons.
Does the Y chromosome in Klinefelters syndrome look like the X chromosome?
No. People with Klinefelter's syndrome have a normal Y chromosome and 2 normal X chromosomes.
Is a triploid chromosome viable in humans?
Triploid chromosome (69 total chromosomes instead of 46) is not viable in humans and typically results in miscarriage. It is considered a lethal condition due to the abnormal number of chromosomes, which disrupts normal genetic function and development.
What is the normal male genotype?
It has the same number of chromosomes as an adult, that is 23 pairs.
What chromosome did the father contribute a normal female is produced?
The father must have contributed an X chromosome if a normal female is produced.
What chromosome did the father contribute if the normal females produced?
The father must have contributed an X chromosome if a normal female is produced.
What is trisomy mutation?
A trisomy is when a person has 3 versions of a chromosome. 'Normal' humans will only have 2 of each chromosome. For example, having 3 versions of chromosome 21 is known as Trisomy 21 or Down Syndrome.
How does the alternation of meiosis and fertilization in the life cycles of sexually reproducing organisms maintain the normal chromosome count for each species?
Simple, Meiosis reduce the chromosome number in half while fertilization doubles the chromosome number. n=chromosome number Meiosis = 2n (primordial germ cells) ----> n (sperm cell/egg cell/polar bodies) Fertilization = sperm (n) + egg (n) ----> 2n (zygote)
How is x chromosome involved with sex determination?
In humans, normal females have XX chromosomes, and males have XY. It is the presence of a Y chromosome that makes an individual a male, not the ratio of X to Y or the presence of only one X. Therefore someone with XXY would be male.
What chromosome is klinefelters syndrome located on?
they have a extra chromosome, a normal male is XY, a male with klinefelters is XXY.
