Tag: all together

Questions Related to all together

I. Suntanned skin is hereditary.
II. Crowning of hair is hereditary.

evs - i growth and personality development heredity and other supporting factors for development all together community work and its importance

  1. I and II both are true

  2. I and II both are false

  3. I is false and II is true

  4. I is true and II is false

Show answer
Correct Option: C
Explanation:
Suntanned skin comes from interaction between persons phenotype and sun. Crowning of hairs is a characteristic transferred to son from father.
So, the correct answer is 'I is false and II is true'

Heredity is seen in ______

evs - i growth and personality development heredity and other supporting factors for development all together community work and its importance

  1. Sexual reproduction

  2. Asexual reproduction

  3. Vegetative propagation

  4. All of the above

Show answer
Correct Option: D
Explanation:

Transfer of genetic makeup from one generation to another is called heredity. Genes are found on Chormation fibre i.e DNA. All living being have tendency to transfer DNA during sexual or asexual reproductions.

Besides activating the egg, another role of a sperm is to carry

evs - i growth and personality development heredity and other supporting factors for development all together community work and its importance

  1. RNA

  2. Mitochondria

  3. DNA

  4. Ribosomes

Show answer
Correct Option: C
Explanation:

A sperm's function is to swim upwards the vaginal canal and deposit genetic material (DNA) within the egg. The midbody contains the vast stores of mitochondria needed for such an exhausting process, the tail allows for swimming, the head contains the genetic material and the acrosome, which uses enzymes to break through the egg's zona pellucida.

What does 'Eugenics' pertains to?

evs - i growth and personality development heredity and other supporting factors for development all together community work and its importance

  1. Improvement of mankind by improving his heredity

  2. Preservating human sperms for artificial insemination

  3. Study of human genetics

  4. Controlling size of a human family

Show answer
Correct Option: A
Explanation:

Eugenics is a social philosophy advocating the improvement of human genetic traits through the promotion of higher reproduction of people with desired traits and reduced reproduction of people with less-desired or undesired traits.

In heredity, the genes are obtained from

evs - i growth and personality development heredity and other supporting factors for development all together community work and its importance

  1. Father

  2. Mother

  3. Both

  4. None of the above

Show answer
Correct Option: C
Explanation:
Heredity is the passing on of traits from parents(i.e both father and mother) to their offspring, either through asexual reproduction or sexual reproduction, the offspring cells or organisms acquire the genetic information of their parents.

So, the correct answer is 'Both'.

Transmission of traits from one generation to the next generation is called as

evs - i growth and personality development heredity and other supporting factors for development all together community work and its importance

  1. Reproduction

  2. Heredity

  3. Both A and B

  4. None of the above

Show answer
Correct Option: B
Explanation:
Heredity can be defined as the passing of phenotypic traits from parents to their offspring, either through asexual reproduction or sexual reproduction. This is the process by which an offspring cell or organism acquires or becomes predisposed to the characteristics of its parent cell or organism. Through heredity, variations exhibited by individuals can accumulate and cause some species to evolve through the natural selection of specific phenotypic traits. 
Reduction in weight of an organism due to nutrition is genetically controlled.
evs - i growth and personality development heredity and other supporting factors for development all together community work and its importance

  1. True

  2. False

Show answer
Correct Option: B
Explanation:

Genetically controlled traits are the one which is regulated by genes and are inherited from one generation to next via the process of reproduction. The overall appearance of an organism (phenotype) is the product of its genotype and environmental factors. The weight of an organism is determined in part by its genotype and in part by environmental factors like nutrition, lifestyle, physical activity etc. Thus, reduction in weight due to malnutrition is the environmental factor and is not determined genetically. Thus, the correct answer is option B 

Heredity deals with the study of______________

evs - i growth and personality development heredity and other supporting factors for development all together community work and its importance

  1. Resemblances and differences between the parent and offspring

  2. Resemblances between the parent and offspring

  3. Differences between the parent and offspring

  4. None of these

Show answer
Correct Option: A
Explanation:

In the process of sexual reproduction, the offsprings produced neither totally resemble (i.e., identical to) their parents nor are they totally different from their parents. Hence, heredity deals with the study of both resemblances and differences of offspring with their parents.

Chromosome theory of heredity was postulated by

evs - i growth and personality development heredity and other supporting factors for development all together community work and its importance

  1. Charles Darwin

  2. Gregor Mendel

  3. Sutton and Boveri

  4. Har Gobind Khorana

Show answer
Correct Option: C
Explanation:

Mendel, during his hybridization experiments on pea plant, proposed presence of unit factors for each trait as heredity material that is faithfully transmitted from one generation to next. He called them “factors”. Sutton and Boveri recognized parallelism between inheritance of Mendel's factors and behavior of the chromosome in meiosis and fertilization. This led them to propose the chromosomal theory of inheritance states that genes are linearly arranged on chromosomes at specific loci. Darwin proposed the theory of natural selection to explain the process of evolution. Khorana extended the experiment of Nirenberg and Holley to reveal that polycytidylate encodes a polypeptide containing only proline and polyadenylate encodes polylysine. M. Nirenberg, Khorana, and Holley were awarded Nobel Prize for in vitro synthesis of polypeptides using artificially synthesized mRNA. Thus, the correct answer is option C.

Being born with certain features or traits in common with the members of our family is 'heredity'.

evs - i growth and personality development heredity and other supporting factors for development all together community work and its importance

  1. True

  2. False

Show answer
Correct Option: A
Explanation:

Hereditary characters are physical or mental characteristics that pass from one generation to another in a family. Heredity is passing of that trait or certain features from parents to offspring.