NEET Test Series from KOTA - 10 Papers In MS WORD
WhatsApp Here
Principle of Inheritance and Variation
184679
Number of chromosomes in Down syndrome is:
1 46
2 47
3 48
4 49
Explanation:
: Number of chromosomes in down syndrome is 47. It is autosomal abromalities. This contition is caused by an abrormality in a baby's chromosomes. Such babies are trisomic for chromosome 21. Thus, there are 47 chromosomes instead of normal 46 . Such disease occurs due to mon disjuction of autosomes during gamete formation. It characterized by mental tetardation and heart defects.
AFMC-2005
Principle of Inheritance and Variation
184682
The loss of one single chromosome cretes a condition called
1 Haploid
2 Nullisony
3 Monosomy
4 Trisomy
Explanation:
: The loss of one single chromosome creates a concition called monosomy. They have the chomosome complement \(2 \mathrm{n}-1\), since, monosomics lack one complete chromosome, such aberrations create major imbalance and cannot be tolerated in diploids.
VMMC-2013
Principle of Inheritance and Variation
184686
The gene for haemophilia is known to be located on:
1 Y chromosome
2 Xchromosome
3 autosome to 21
4 autosome no 18 JPMER-1997
Explanation:
: The gene for haemophilia is known to be located on X-chromosome. It is sex-linked recessive trait. This disease is associated with the defects in blood clotting protein. The heterozygous female for haemophilia may transmit the cisease to sons.
Principle of Inheritance and Variation
184692
X-chromosomes of female in a sex-linked inheritance case can be passed on to
1 Only female progeny
2 Only male progeny
3 Only in grand daughter
4 Male and female progeny
Explanation:
: X-Chromosomes of female in a sex-linked inheritance case can be passed on to both male progeny and female progeny. Males are more affected by sexlinked traits in comparison to female because they are heterozygous. The female passes the X-linked inheritance to both son and daughter, as they are homozygous to the X-chromosome to both offspring.
: Number of chromosomes in down syndrome is 47. It is autosomal abromalities. This contition is caused by an abrormality in a baby's chromosomes. Such babies are trisomic for chromosome 21. Thus, there are 47 chromosomes instead of normal 46 . Such disease occurs due to mon disjuction of autosomes during gamete formation. It characterized by mental tetardation and heart defects.
AFMC-2005
Principle of Inheritance and Variation
184682
The loss of one single chromosome cretes a condition called
1 Haploid
2 Nullisony
3 Monosomy
4 Trisomy
Explanation:
: The loss of one single chromosome creates a concition called monosomy. They have the chomosome complement \(2 \mathrm{n}-1\), since, monosomics lack one complete chromosome, such aberrations create major imbalance and cannot be tolerated in diploids.
VMMC-2013
Principle of Inheritance and Variation
184686
The gene for haemophilia is known to be located on:
1 Y chromosome
2 Xchromosome
3 autosome to 21
4 autosome no 18 JPMER-1997
Explanation:
: The gene for haemophilia is known to be located on X-chromosome. It is sex-linked recessive trait. This disease is associated with the defects in blood clotting protein. The heterozygous female for haemophilia may transmit the cisease to sons.
Principle of Inheritance and Variation
184692
X-chromosomes of female in a sex-linked inheritance case can be passed on to
1 Only female progeny
2 Only male progeny
3 Only in grand daughter
4 Male and female progeny
Explanation:
: X-Chromosomes of female in a sex-linked inheritance case can be passed on to both male progeny and female progeny. Males are more affected by sexlinked traits in comparison to female because they are heterozygous. The female passes the X-linked inheritance to both son and daughter, as they are homozygous to the X-chromosome to both offspring.
: Number of chromosomes in down syndrome is 47. It is autosomal abromalities. This contition is caused by an abrormality in a baby's chromosomes. Such babies are trisomic for chromosome 21. Thus, there are 47 chromosomes instead of normal 46 . Such disease occurs due to mon disjuction of autosomes during gamete formation. It characterized by mental tetardation and heart defects.
AFMC-2005
Principle of Inheritance and Variation
184682
The loss of one single chromosome cretes a condition called
1 Haploid
2 Nullisony
3 Monosomy
4 Trisomy
Explanation:
: The loss of one single chromosome creates a concition called monosomy. They have the chomosome complement \(2 \mathrm{n}-1\), since, monosomics lack one complete chromosome, such aberrations create major imbalance and cannot be tolerated in diploids.
VMMC-2013
Principle of Inheritance and Variation
184686
The gene for haemophilia is known to be located on:
1 Y chromosome
2 Xchromosome
3 autosome to 21
4 autosome no 18 JPMER-1997
Explanation:
: The gene for haemophilia is known to be located on X-chromosome. It is sex-linked recessive trait. This disease is associated with the defects in blood clotting protein. The heterozygous female for haemophilia may transmit the cisease to sons.
Principle of Inheritance and Variation
184692
X-chromosomes of female in a sex-linked inheritance case can be passed on to
1 Only female progeny
2 Only male progeny
3 Only in grand daughter
4 Male and female progeny
Explanation:
: X-Chromosomes of female in a sex-linked inheritance case can be passed on to both male progeny and female progeny. Males are more affected by sexlinked traits in comparison to female because they are heterozygous. The female passes the X-linked inheritance to both son and daughter, as they are homozygous to the X-chromosome to both offspring.
NEET Test Series from KOTA - 10 Papers In MS WORD
WhatsApp Here
Principle of Inheritance and Variation
184679
Number of chromosomes in Down syndrome is:
1 46
2 47
3 48
4 49
Explanation:
: Number of chromosomes in down syndrome is 47. It is autosomal abromalities. This contition is caused by an abrormality in a baby's chromosomes. Such babies are trisomic for chromosome 21. Thus, there are 47 chromosomes instead of normal 46 . Such disease occurs due to mon disjuction of autosomes during gamete formation. It characterized by mental tetardation and heart defects.
AFMC-2005
Principle of Inheritance and Variation
184682
The loss of one single chromosome cretes a condition called
1 Haploid
2 Nullisony
3 Monosomy
4 Trisomy
Explanation:
: The loss of one single chromosome creates a concition called monosomy. They have the chomosome complement \(2 \mathrm{n}-1\), since, monosomics lack one complete chromosome, such aberrations create major imbalance and cannot be tolerated in diploids.
VMMC-2013
Principle of Inheritance and Variation
184686
The gene for haemophilia is known to be located on:
1 Y chromosome
2 Xchromosome
3 autosome to 21
4 autosome no 18 JPMER-1997
Explanation:
: The gene for haemophilia is known to be located on X-chromosome. It is sex-linked recessive trait. This disease is associated with the defects in blood clotting protein. The heterozygous female for haemophilia may transmit the cisease to sons.
Principle of Inheritance and Variation
184692
X-chromosomes of female in a sex-linked inheritance case can be passed on to
1 Only female progeny
2 Only male progeny
3 Only in grand daughter
4 Male and female progeny
Explanation:
: X-Chromosomes of female in a sex-linked inheritance case can be passed on to both male progeny and female progeny. Males are more affected by sexlinked traits in comparison to female because they are heterozygous. The female passes the X-linked inheritance to both son and daughter, as they are homozygous to the X-chromosome to both offspring.