science
Grade-10
Easy
Question
A length of DNA that codes for a specific characteristic
- Variation
- Species
- Fitness
- Gene
Hint:
Unit of heredity.
The correct answer is: Gene
DNA is the genetic material of most of the living organisms. Gene is the functional unit of heredity. Gene is a particular sequence of DNA that codes for particular trait. The genes are present in a specific region called locus. Chromosomal mapping can be used to determine the location of specific genes in a chromosome. Following transcription and translation, a particular gene is converted into a specific protein for the expression of the trait.
Genes can be classified into coding and non-coding genes.
Mutation of specific genes causes genetic disorders like hemophilia, sickle cell anemia, cystic fibrosis and many more.
- Functional unit if hereditary is called gene
- Gene codes for specific proteins
- Genes are located at locus
- Alteration in the sequence of DNA is called mutation
Related Questions to study
science
Differences that exist naturally among members of a population or species are called ___?
- Genetic variation is the reason for difference among individuals within the same species
- Variations can be continuous or discontinuous
Differences that exist naturally among members of a population or species are called ___?
scienceGrade-10
- Genetic variation is the reason for difference among individuals within the same species
- Variations can be continuous or discontinuous
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The ability to recognize a predator is an example of a ______adaptation?
The ability to recognize a predator is an example of a ______adaptation?
scienceGrade-10
science
Most adaptations that help an organism survive are passed on from parent to child as ___traits?
- Genetic information is stored in DNA present in the nucleus of the cells
- Genetic information can be passed from parent to offspring which is termed as inheritance
Most adaptations that help an organism survive are passed on from parent to child as ___traits?
scienceGrade-10
- Genetic information is stored in DNA present in the nucleus of the cells
- Genetic information can be passed from parent to offspring which is termed as inheritance
science
An organism that survives longer is more likely to produce_______offspring
- Individuals lacking fitness either does not attain mature age or fail to reproduce healthy offspring
An organism that survives longer is more likely to produce_______offspring
scienceGrade-10
- Individuals lacking fitness either does not attain mature age or fail to reproduce healthy offspring
science
Which one of the following shows continuous variation?
- Genetic variation is the reason for difference among individuals within the same species
- Variations can be continuous or discontinuous
- Continuous variation of a trait is not limited to a specific number as in height or weight of individuals in a group
Which one of the following shows continuous variation?
scienceGrade-10
- Genetic variation is the reason for difference among individuals within the same species
- Variations can be continuous or discontinuous
- Continuous variation of a trait is not limited to a specific number as in height or weight of individuals in a group
science
Which one of the following shows discontinuous variation?
- Genetic variation is the reason for difference among individuals within the same species
- Variations can be continuous or discontinuous
- Discontinuous variation of a trait is limited to specific number as in eye color or blood groups
Which one of the following shows discontinuous variation?
scienceGrade-10
- Genetic variation is the reason for difference among individuals within the same species
- Variations can be continuous or discontinuous
- Discontinuous variation of a trait is limited to specific number as in eye color or blood groups
science
The variety of genes and alleles that exist in organisms.
- Genetic diversity refers to difference in genetic make up among individuals of the same species
- Genetic diversity decides the fate of survival of the individual
- Different breeds of animals, birds are few examples of genetic diversity
- Independent assortment represents the separation of genes during meiosis
The variety of genes and alleles that exist in organisms.
scienceGrade-10
- Genetic diversity refers to difference in genetic make up among individuals of the same species
- Genetic diversity decides the fate of survival of the individual
- Different breeds of animals, birds are few examples of genetic diversity
- Independent assortment represents the separation of genes during meiosis
science
_____________ is the transfer of characters from parents to offspring.
_____________ is the transfer of characters from parents to offspring.
scienceGrade-10
science
Mitosis is also known as _________________.
Mitosis is also known as _________________.
scienceGrade-10
science
Genetic variation is not caused by:
Genetic variation is not caused by:
scienceGrade-10
science
Crossing over occurs in which phase?
Crossing over occurs in which phase?
scienceGrade-10
science
If a diploid cell with a diploid number of 36 chromosomes undergoes meiosis. How many chromosomes are present in each daughter cell after division?
If a diploid cell with a diploid number of 36 chromosomes undergoes meiosis. How many chromosomes are present in each daughter cell after division?
scienceGrade-10
science
What is the significance of crossing over?
What is the significance of crossing over?
scienceGrade-10
science
____________ type of cell division takes place in gametes.
____________ type of cell division takes place in gametes.
scienceGrade-10
science
After which phase in the cell cycle and DNA replication, meiosis begins?
After which phase in the cell cycle and DNA replication, meiosis begins?
scienceGrade-10
