Genetics and Heredity MCQs with Answers

The trait that is expressed in the heterozygous condition is ____.

The disorder caused by a defect in the X chromosome resulting in progressive muscle degeneration is ____.

The type of inheritance where a trait is determined by the interaction of alleles at multiple loci is ____.

The inheritance pattern where both alleles contribute equally and fully to the phenotype is ____.

The term for the alleles an individual has for a particular gene is ____.

The genetic disorder caused by the presence of an abnormal hemoglobin molecule is ____.

The type of inheritance where the phenotype of heterozygotes is intermediate between the phenotypes of individuals homozygous for either allele is ____.

The father of modern genetics who formulated the principles of heredity through pea plant experiments was ____.

The genetic disorder caused by a defect in the gene encoding hemoglobin is ____.

The units of hereditary information located on chromosomes are ____.

The condition where one gene influences multiple, seemingly unrelated phenotypic traits is ____.

The number of chromosomes in a human gamete is ____.

The diagram used to predict the outcome of a particular cross or breeding experiment is a ____.

The likelihood that a particular event will occur is called ____.

The different forms of a gene that can exist are called ____.

The probability of rolling a six on a fair six-sided die is ____.

The phenomenon where a single gene has multiple effects on different traits is ____.

The inheritance pattern where multiple genes contribute to the phenotype of a trait is ____.

The physical appearance of an organism is its ____.

The type of cell division that produces gametes with half the chromosome number is ____.

The genetic disorder caused by the presence of an extra chromosome 21 is ____.

The diagram that shows the presence or absence of a trait across several generations is a ____.

The genetic disorder characterized by a progressive breakdown of nerve cells in the brain is ____.

The genetic disorder caused by the absence of an enzyme needed to break down a lipid is ____.

The condition where one allele is not completely dominant over another is ____.

The likelihood that a heterozygous genotype will express the recessive phenotype is ____.

The branch of biology that studies how traits are passed from parents to offspring is ____.

The inheritance pattern where two or more genes affect a single phenotype is ____.

The phenotype resulting from the interaction of multiple genes is ____.

The likelihood that a genotype will manifest as its corresponding phenotype is ____.

The process by which homologous chromosomes exchange genetic material during meiosis is ____.

The sex-linked disorder that impairs the blood's ability to clot properly is ____.

The sex chromosomes in humans are denoted as ____.

The genetic disorder caused by a mutation in the CFTR gene, affecting the lungs and digestive system, is ____.

The term for having two identical alleles for a particular gene is ____.

The first filial generation in a cross is denoted as ____.

The genetic makeup of an organism is its ____.

The genetic principle that states that alleles segregate independently during gamete formation is ____.

The process by which chromosomes condense and become visible during cell division is ____.

The process by which genes from both parents are combined and passed on to offspring is ____.