In order for Mendel's simple ratios to hold true, the following assumption must be made:Multiple choice question.that there are multiple alleles for each traitthat environmental effects are involvedthat the traits are inherited independentlythat only dominant alleles affect phenotypes

In 1866, Mendel published three main conclusions to his findings. Which of the following ideas was not proposed by Mendel?Characteristics are determined by hereditary unitsHereditary units are organised in chromosomesHereditary units can be dominant or recessive Hereditary units are passed on unchanged by both parents3The height of Mendel’s pea plants is controlled by a single gene with two alleles: a dominant tall allele (T) and a recessive short allele (t). In a series of F1 crosses involving one homozygous tall plant (TT) and one short plant (tt), 400 F2 offspring were produced. Approximately how many of these offspring would you expect to be short?200Zero4001004In a series of crosses involving pea plants heterozygous for the height gene, 800 offspring are produced. Approximately how many of these offspring would you expect to be tall?8002006004005Mendel’s investigations were ‘reproducible’. What is meant by this term?The pea plants could be reproducedThe investigations could be repeated by different researchers with different resultsMendel reproduced his own investigations with the same results on numerous occasionsThe investigations could be repeated by different researchers with the same results

Select all that applySelect all of the following that are true about linked genes.Multiple select question.produce a phenotypic ratio of 9:3:3:1 in the F2 offspring of a dihybrid crossinherited togetherdo not assort independentlylocated on the same chromosomeencoded the seven traits Mendel studied

Choose statements that correctly refer to components of Mendel's model of inheritance (please note that the answers use the modern term gene instead of factor).Multiple select question.Alternative forms of genes are called alleles.Parents transmit genes to offspring.The presence of an allele doesn't ensure that it will be expressed.The two alleles remain discrete.Each individual receives two copies of each gene from each parent.The two alleles are usually the same.

Each parent contributes one allele at each locus to his or her offspring. This is known as Mendel's Law of

After Mendel's work, biologists determined that a single chromosome carriesMultiple choice question.many alleles for one gene.only two genes.many genes.a single gene.