10/05/2020Variation(Senior Class Biology Study by Topics) 0Comments by Gate Academy Please fill in the information below. NAME EMAIL PHONE NUMBER 1. Each GAMETE contains this many chromosomes as a body cellThe same amountHalf as many1/3 as manyTwice as many2. There is no similarities between human DNA and DNA other of mammals such as chimpanzeesTrueFalse3. Malthus was a biologist who first suggested that variation provided the means by which populations adapt to their environment.TrueFalse4. What is the cross breed of a horse and a donkeyaliencalfhorkeymule5. Darwin considered variations in a population to be the raw materials of evolution.TrueFalse6. Bacterial resistance is an example ofInheritanceSpeciationEvolutionFertillisation7. The difference between a monohybrid cross and a dihybrid cross is thatMonohybrid crosses involve one trait; dihybrid crosses involve two traits.Monohybrid crosses involve self-pollination, while dihybrid crosses involve cross-pollination.Monohybrid crosses involve traits for which only one allele exists, while dihybrid traits involve two alleles.Dihybrid crosses require two Punnett squares; monohybrid crosses need only one.8. Chromosomes are found in the ................ of each cellwhite blood cellnucluesred blood cellplasma9. Charles Darwin was the first one to consider environment, migration, overcrowding, and isolation of populations as factors that could influence evolution.FalseTrue10. The process of removing stamens of a flower during hybridization is calledCrossingHybridizationEmasculationSterilization11. Find the correct meanings of the definition; classgroups of organisms that have many features in commoncompromising of several classesanimalia, plantae, fungi, protoctista and prokaryataecompromising of several orders12. If the trait for the fur pattern on a dog were solid fur(f) and spotted fur(F), a homozygous female with solid fur and a homozygous male with spotted fur have a 25% chance of having an offspring with solid fur.TrueFalse13. Tomato plants usually have hairy stems. Hairless stems are present in tomato plants that are homozygous recessive for this trait. If the stem characteristics are determined by a single gene, what is the expected outcome of crossing two tomato plants that are heterozygous for hairy stems?100% hairy stems100% hairless stems50% hairy stems: 50% hairless stems75% hairy stems: 25% hairless stems14. Inheritance of skin colour in human is an example ofPolygenic inheritanceMendelian inheritanceMonogenic inheritanceComplementary genes15. Which of these bases is not found in DNA?CytosineGuanineAdenineUracil16. Adaptations are the characteristics of an organism that enable it to survive in its environmentTrueFalse17. What is Discontinious variationis aquired characteristics caused by environmental factorsthis is when characteristics are spread over a range of valuesthere are no intermediates, but rather distinctly different groupsinherited characteristics caused by mutation or reproduction18. Cause of Down's syndrome isNondisjunction of chromosomesSex linked inheritanceCrossing overIinkage19. Father's blood group is A and mother's blood group is O. What will be the not possible blood groups for childAB, ABO,BAB, O20. What does heterozygous meanhaving two identical alleles of the same geneone out of two or more versions of a genhaving two different alleles of the same genean allele that is only expressed if there is no dominant allele present21. Which of the following is an australian animal which is also a mix of both mammal and birdZorsePlatterpussYellowhammerOstrich22. Sexual reproduction in animals depends on the production of gametes. Choose all the processes below that produce gametes in animals?FertilizationMeiosisProtein synthesisMitosis23. What does dominant meanone out of two or more versions of a genehaving two different alleles of the same genean allele that is only expressed if there is no dominant allele present24. The process of diffusion accounts for what percent of a society’s cultural inventory on average?25%75%90%10%25. Punnett squares are not used to predict the probabilities of outcomes from crossesTrueFalse26 out of 25Time is Up!
