Heredity and Evolution (Class - X)
| Description: Biology | |
| Number of Questions: 15 | |
| Created by: Shankara Prabhu | |
| Tags: Biology Comparison of Plant and Animal Cell Cell Membrane and Cytoplasm Shape and Size of Cell Cell - Structure and Functions Events Leading to Discovery of Cell Heredity and Evolution Expression of Traits |
The characteristic or trait which is visible in an organism is called its
Which of the following statements is/are correct?
a. Genes are thread-like structures in the nucleus of a cell formed of DNA which carry the chromosomes. b. The dominant gene decides the appearance of an organism even in the presence of an alternative gene. c. The recessive gene decides the appearance of a person in the absence of the dominant gene.
Which of the following statements is/are correct?
a. George Mendel is known as the father of genetics. b. He studied the pattern of inheritance. c. His experiments showed that inherited traits blended in F1 generation.
In order to ensure that he had pure breeding plants for his experiments, Mendel
Mendel studied different varieties of pea plants, which he grew in his garden. Which of the following was not an observation he made involving the transfer of characteristics from parent to progeny?
Which of the following statements is/are correct about the first generation purebred cross between tall and dwarf plants?
a. Only tall plants were produced in the first generation. b. Tall and dwarf plants were produced in the ratio 3 : 1. c. Only dwarf plants were produced in the F1. d. The seeds were round and green.
Which of the following is the ratio of each phenotype of the seeds in the F2 generation of dihybrids?
Which of the following statements is/are correct?
a. The sex of a human offspring is decided by the chromosome of sperm at the time of fertilisation. b. In some reptiles, the temperature at which the fertilised egg is incubated before hatching determines the sex of the hatched progeny. c. In some animals, individuals can change sex and it is not determined genetically.
________ seeds were seen in the second generation when Mendel crossbred purebred F1 pea plants having round yellow seeds by self-pollination.
a. Round yellow b. Round green c. Wrinkled yellow d. Wrinkled green
Which of the following blood genes is/are recessive in relation to other genes?
a. IA b. IB c. IO
Inherited traits are the characteristics which we receive from our parents. Which of the following is/are not an inherited trait?
All of the following are the pairs of homologous organs, except
a. forelimbs of human and lizard b. forelimbs of a bird and a bat c. wings of a bird and insect
If a person has the genotype IAIO, then which of the following will be his blood group?
Wild cabbage has evolved in different ways by artificial selection. Which of the following vegetables was produced when farmers opted for arrested flower development of wild cabbage plant?
The theory of natural selection suggests that the best adapted organisms are selected by nature to pass on their characteristics to the next generation. Who gave this theory?