The fossil remains of Archaeopteryx is a connecting link between? Mark as favorite Copy Link amphibian and reptile fish and amphibian reptiles and bird reptiles and mammals Check Answer
Mendel studied seven contrasting characters for his breeding experiment with Pisum sativum, which of the following character did he not use? Mark as favorite Copy Link Leaf shape Plant height Pod shape Pod colour Check Answer
Which of the following statements is not true with respect to variation? Mark as favorite Copy Link Variation is minimum in asexual reproduction All variations in a species have equal chance of survival Selection of variants by environmental factors forms the basis of evolutionary processes. Change in genetic composition results in variation Check Answer
The remaps (or impressions) of dead animals or plant? that lived in the remote past are known as? Mark as favorite Copy Link naturally selected species extinct species fossils none of the above Check Answer
A cross between a tall pea-plant (TT) and a short pea-plant (tt) resulted in progenies that were all tall plants because? Mark as favorite Copy Link tallness is the dominant trait. height of pea-plant is not governed by gene T or t. shortness is the dominant trait. tallness is the recessive trait. Check Answer
Genotype means? Mark as favorite Copy Link Genetic composition of an organ Genetic composition of the individual Genetic composition of plastids Genetic composition of the germ cell Check Answer
Two pink colored flowers on crossing resulted in 1 red, 2 pink and 1 white flower progeny. the nature of the cross will be? Mark as favorite Copy Link No fertilization Cross fertilization Self-pollination Double fertilization Check Answer
The crossing of a homozygous tall plant with a dwarf would yield F plants in the ratio of? Mark as favorite Copy Link all homozygous dwarf all homozygous tall one homozygous tall, one homozygous dwarf and two heterozygous tall two tall and two dwarf Check Answer
The physical manifestation of an organism’s genes is its? Mark as favorite Copy Link Phenotype Genotype Environment Genetic code Check Answer
The genotype of a dominant parent is determined by crossing it with the recessive parent. This cross is called? Mark as favorite Copy Link out cross long cross back cross test cross Check Answer