science
Grade-10
Easy

Question

Phenotype means the ______________________ of an individual.

  1. Genetic makeup

  2. Physical appearance

  3. Recessive alleles.

  4. None of the above

     

hintHint:

The observable characteristic of an individual.

The correct answer is:

Physical appearance


    • Phenotypes include the physical or observable characters of an individual
    • Phenotype is also called traits 
    • The height, weight, eye color, blood group, all are few examples of phenotype
    • The phenotype is due to the expression of a particular gene
    • Environment also effects the phenotype in some cases

    • Behavior is also included in phenotype
    • Phenotype can be subjected to change
    • Alteration of phenotype to survive extreme condition is the basis for evolution

    Related Questions to study

    Grade-10
    science

    Which among the following is a recessive trait in pea plants?

    • The homozygous trait for violet flower is PP and for white flower is pp
    • A cross between these two flowers produced Pp which is heterozygous
    • The hybrid formed exhibited dominant allele purple color, which will mask the recessive allele expression

    Which among the following is a recessive trait in pea plants?

    scienceGrade-10

    • The homozygous trait for violet flower is PP and for white flower is pp
    • A cross between these two flowers produced Pp which is heterozygous
    • The hybrid formed exhibited dominant allele purple color, which will mask the recessive allele expression

    Grade-10
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    Mendel believed that characteristics of pea plants are determined by the:

    • Genes have two alleles: a dominant and recessive
    • If both alleles are same they are termed homozygous, otherwise heterozygous
    • The offspring will exhibit the characteristics of the dominant allele 

    Mendel believed that characteristics of pea plants are determined by the:

    scienceGrade-10

    • Genes have two alleles: a dominant and recessive
    • If both alleles are same they are termed homozygous, otherwise heterozygous
    • The offspring will exhibit the characteristics of the dominant allele 

    Grade-10
    science

    Mendel used __________ type of pea lines.

    • Self pollinating flowers are produced when pollen fall from anther to the stigma of the same plant
    • The genetic information of the female and male gametes will be same
    • New character will not be produced during self pollination or true breeding
    • Elimination of weaker qualities will not be possible in these plants

    Mendel used __________ type of pea lines.

    scienceGrade-10

    • Self pollinating flowers are produced when pollen fall from anther to the stigma of the same plant
    • The genetic information of the female and male gametes will be same
    • New character will not be produced during self pollination or true breeding
    • Elimination of weaker qualities will not be possible in these plants

    parallel
    Grade-10
    science

    The idea that different alleles pairs are passed to offspring independently of each other is Mendel's law of:

    • The law of segregation is the basis for independent assortment
    • During meiosis, the number of chromosomes is reduced to half to form haploid gametes
    • The assortment of the chromosomes into gametes occur randomly
    • Following segregation, recombination also occurs during meiosis
    • Combination of paternal and maternal genes can occur and a hybrid is formed

    The idea that different alleles pairs are passed to offspring independently of each other is Mendel's law of:

    scienceGrade-10

    • The law of segregation is the basis for independent assortment
    • During meiosis, the number of chromosomes is reduced to half to form haploid gametes
    • The assortment of the chromosomes into gametes occur randomly
    • Following segregation, recombination also occurs during meiosis
    • Combination of paternal and maternal genes can occur and a hybrid is formed

    Grade-10
    science

    The genotypic ratio of monohybrid cross is?

    • Monohybrid cross is the cross between parents with homozygous genotype of a single trait
    • Genotype of homozygous individuals cane be determined through monohybrid cross
    • The dominant allele can be determined
    • Punnett square can be used to determine the phenotype and genotype 

    The genotypic ratio of monohybrid cross is?

    scienceGrade-10

    • Monohybrid cross is the cross between parents with homozygous genotype of a single trait
    • Genotype of homozygous individuals cane be determined through monohybrid cross
    • The dominant allele can be determined
    • Punnett square can be used to determine the phenotype and genotype 

    Grade-10
    science

    Continuous self-pollination in a species may develop?

    • Pollination helps in the reproduction in plants by transfer of pollen grains from anther to stigma
    • Pollination can be classified into 
    1. Self pollination: Pollen grains from anther falls into the stigma of the same flower
    2. Cross pollination: Pollen grains from anther falls into the stigma of a different flower

    Continuous self-pollination in a species may develop?

    scienceGrade-10

    • Pollination helps in the reproduction in plants by transfer of pollen grains from anther to stigma
    • Pollination can be classified into 
    1. Self pollination: Pollen grains from anther falls into the stigma of the same flower
    2. Cross pollination: Pollen grains from anther falls into the stigma of a different flower

    parallel
    Grade-10
    science

    Which method is used to produce a true-breeding line?  

    • True or pure breeding is possible in self-pollination
    • Elimination of weaker qualities is not possible
    • New variety of offspring cannot be formed in self-pollinating plants

    Which method is used to produce a true-breeding line?  

    scienceGrade-10

    • True or pure breeding is possible in self-pollination
    • Elimination of weaker qualities is not possible
    • New variety of offspring cannot be formed in self-pollinating plants

    Grade-10
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    The process of the transfer of characters from parents to offspring is referred to as ______

    • The genes are present in chromosomes
    • Each organism has a specific number of chromosome
    • Humans have 23 pairs while peas have 7 pairs

    The process of the transfer of characters from parents to offspring is referred to as ______

    scienceGrade-10

    • The genes are present in chromosomes
    • Each organism has a specific number of chromosome
    • Humans have 23 pairs while peas have 7 pairs

    Grade-10
    science

    Which is not a pair of contrasting traits studied by Mendel?

    • Gene is the hereditary unit
    • Gene can have different versions called alleles
    • The alleles can be dominant or recessive
    • The presence of a dominant allele will mask the presence of a recessive allele

    Which is not a pair of contrasting traits studied by Mendel?

    scienceGrade-10

    • Gene is the hereditary unit
    • Gene can have different versions called alleles
    • The alleles can be dominant or recessive
    • The presence of a dominant allele will mask the presence of a recessive allele

    parallel
    Grade-10
    science

    Mendel’s idea that the pair of alleles of each parent separate and only one allele from each parent is passed to an offspring is explained by:

    • Law of segregation is the second law of inheritance
    • Law of inheritance is based on the following:
    1. Gene can exist in various versions called alleles
    2. During meiosis, separation of allelic pair occurs providing single allele to each gamete
    3. Organisms inherit two alleles for each phenotype
    4. In an allele pair, one is dominant while other is recessive

    Mendel’s idea that the pair of alleles of each parent separate and only one allele from each parent is passed to an offspring is explained by:

    scienceGrade-10

    • Law of segregation is the second law of inheritance
    • Law of inheritance is based on the following:
    1. Gene can exist in various versions called alleles
    2. During meiosis, separation of allelic pair occurs providing single allele to each gamete
    3. Organisms inherit two alleles for each phenotype
    4. In an allele pair, one is dominant while other is recessive

    Grade-10
    science

    Which plant was used by Mendel to give the laws of inheritance?

    • The garden peas have a short germination period of 7 to 14 days
    • The basics of heredity was explained by Gregor Mendel
    • The traits exhibited by both dominant and recessive plants are as follows:
      CharacterDominantRecessive
      Seed shapeSmoothWrinkled
      Seed colorYellowGreen
      Flower colorPurpleWhite
      Pod shapeInflatedConstricted
      Pod colorGreenYellow
      Flower positionAxialTerminal
      Stem lengthTallDwarf

    Which plant was used by Mendel to give the laws of inheritance?

    scienceGrade-10

    • The garden peas have a short germination period of 7 to 14 days
    • The basics of heredity was explained by Gregor Mendel
    • The traits exhibited by both dominant and recessive plants are as follows:
      CharacterDominantRecessive
      Seed shapeSmoothWrinkled
      Seed colorYellowGreen
      Flower colorPurpleWhite
      Pod shapeInflatedConstricted
      Pod colorGreenYellow
      Flower positionAxialTerminal
      Stem lengthTallDwarf

    Grade-10
    science

    In the given options which is a dominant trait?

    • Law of inheritance includes:
    1. Law of dominance
    2. Law of segregation
    3. Law of independent assortment

    In the given options which is a dominant trait?

    scienceGrade-10

    • Law of inheritance includes:
    1. Law of dominance
    2. Law of segregation
    3. Law of independent assortment

    parallel
    Grade-10
    science

    What explains the differences between the progeny and parents?

    What explains the differences between the progeny and parents?

    scienceGrade-10
    Grade-10
    science

    Who proposed the laws of inheritance?

    • Gregor Mendel explained the transmission of traits from parents to offspring
    • Mendel devised the monohybrid and dihybrid crosses

    Who proposed the laws of inheritance?

    scienceGrade-10

    • Gregor Mendel explained the transmission of traits from parents to offspring
    • Mendel devised the monohybrid and dihybrid crosses

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    Which is the CORRECT statement regarding gametophytes?

    • Sporophytes are diploid (2n)
    • Spores produced by meiosis are haploid (n)
    • Gametophytes are haploid (n)
    • Gametes formed will be haploid (n)
    • Zygote formed will be diploid (2n)

    Which is the CORRECT statement regarding gametophytes?

    scienceGrade-10

    • Sporophytes are diploid (2n)
    • Spores produced by meiosis are haploid (n)
    • Gametophytes are haploid (n)
    • Gametes formed will be haploid (n)
    • Zygote formed will be diploid (2n)

    parallel

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