science
Grade-10
Easy
Question
In prophase I of meiosis I __________ occurs.
Non-disjunction
Separation of homologous chromosomes
Separation of sister chromatids
Crossing over
Non-disjunction
Separation of homologous chromosomes
Separation of sister chromatids
Crossing over
Hint:
The exchange of DNA takes place in prophase
The correct answer is: Crossing over
In prophase, I, a complex of DNA and proteins known as chromatin condenses to form chromosomes. Duplicated pairs of chromosomes, known as sister chromatids, remain connected at a central point called the centromere.
Related Questions to study
science
What structures exchange genetic material during crossing over?
Non-sister chromatids
Non-homologous chromosomes
Sister chromatids
Egg and the sperm
What structures exchange genetic material during crossing over?
scienceGrade-10
Non-sister chromatids
Non-homologous chromosomes
Sister chromatids
Egg and the sperm
science
Hemophilia disease is produced in the male by how many gene/s?
- Two gene
- Three gene
- Single gene
- Four gene
Hemophilia disease is produced in the male by how many gene/s?
scienceGrade-11
- Two gene
- Three gene
- Single gene
- Four gene
science
How do genetic disorders happen?
- Mutations
- Mistakes during meiosis
- Both A and B
- They are transmitted
How do genetic disorders happen?
scienceGrade-11
- Mutations
- Mistakes during meiosis
- Both A and B
- They are transmitted
science
In Down’s syndrome of a male child, the sex chromosome is
- XO
- XY
- XX
- XXY
In Down’s syndrome of a male child, the sex chromosome is
scienceGrade-11
- XO
- XY
- XX
- XXY
science
Which one is a hereditary disease?
- Cataract
- Leprosy
- Blindness
- Phenylketonuria
Which one is a hereditary disease?
scienceGrade-11
- Cataract
- Leprosy
- Blindness
- Phenylketonuria
science
Which of the following can increase the rate of mutation?
- UV Radiation
- Viruses
- Toxic chemicals
- All of the above
Which of the following can increase the rate of mutation?
scienceGrade-11
- UV Radiation
- Viruses
- Toxic chemicals
- All of the above
science
Genetic mutations can be...
- Beneficial, harmful, or neutral
- Beneficial only
- Harmful only
- Neutral only
Genetic mutations can be...
scienceGrade-11
- Beneficial, harmful, or neutral
- Beneficial only
- Harmful only
- Neutral only
science
What do gene mutations change?
- DNA
- RNA
- Proteins
- Lipids
What do gene mutations change?
scienceGrade-11
- DNA
- RNA
- Proteins
- Lipids
science
Are all mutations bad?
- Yes
- No
- Maybe
- None
Are all mutations bad?
scienceGrade-11
- Yes
- No
- Maybe
- None
science
Any change in the sequence of DNA is...
- Transgenic shift
- Single genotype
- Monohybrid trait
- Mutation
Any change in the sequence of DNA is...
scienceGrade-11
- Transgenic shift
- Single genotype
- Monohybrid trait
- Mutation
science
What do we use pedigrees for?
- To look at families
- To make determinations about the offspring
- To track traits in families
- Nothing
What do we use pedigrees for?
scienceGrade-11
- To look at families
- To make determinations about the offspring
- To track traits in families
- Nothing
science
Which sex chromosomes would indicate a typical human male?
- XX
- X
- XY
- XXY
Which sex chromosomes would indicate a typical human male?
scienceGrade-11
- XX
- X
- XY
- XXY
science
In order to trace occurrence of a trait through several generations of a family, you could create a ____________.
- Karyotype
- Hemoglobin
- Pedigree
- Chromosomal map
In order to trace occurrence of a trait through several generations of a family, you could create a ____________.
scienceGrade-11
- Karyotype
- Hemoglobin
- Pedigree
- Chromosomal map
science
Which chromosome is affected by hemophilia?
- X
- Y
- 21
- 13
Which chromosome is affected by hemophilia?
scienceGrade-11
- X
- Y
- 21
- 13
