Heredity
Biology · 50 practice questions
Inheritance of heritable and non-heritable characters; chromosomes as the basis of heredity (structure, transmission of characters); probability in genetics and sex determination; applications of heredity in agriculture and medicine; sex-linked characters (e.g. baldness, haemophilia, colour blindness).
- Determine heritable and non-heritable characters and illustrate the simple structure of DNA.
- Illustrate gene segregation at meiosis and recombination at fertilization.
- Analyse cross-breeding data and apply heredity principles to producing new crop/livestock varieties.
- Deduce the advantages/disadvantages of out-breeding and in-breeding.
- Analyse issues around genetically modified organisms and gene therapy.
- Apply heredity knowledge in marriage counselling (blood grouping, sickle-cell anaemia, Rhesus factor).
- Identify sex-linked characters.
Try a few questions
- Practice question 1
Co-dominance, in genetics, specifically describes a situation in which
- A.a factor entirely unrelated to both alleles contributing to the phenotype
- B.only the dominant allele present has any observable effect at all
- C.both alleles present contribute to the observed phenotype
- D.neither allele present has any observable effect on the phenotype at all
Show the answer
C. both alleles present contribute to the observed phenotype
Co-dominance, in genetics, specifically describes a situation in which both alleles present contribute to the phenotype.
- Practice question 2
Phenotype, a genetics term, specifically refers to the
- A.a factor entirely unrelated to observable, physical characteristics
- B.exact number of chromosomes present within an organism's own cells
- C.observable, physical characteristics of an organism
- D.genetic makeup of an organism, a term instead described as genotype
Show the answer
C. observable, physical characteristics of an organism
Phenotype, a genetics term, specifically refers to the observable, physical characteristics of an organism.
- Practice question 3
Cross-breeding, a traditional genetic technique, specifically is used mainly to
- A.eliminate all genetic variation from a population entirely
- B.produce offspring that are genetically identical to only one parent
- C.combine desirable traits from two different parent organisms
- D.a factor entirely unrelated to combining desirable traits of any kind
Show the answer
C. combine desirable traits from two different parent organisms
Cross-breeding, a traditional genetic technique, specifically is used mainly to combine desirable traits from two parent organisms.
More UTME Biology topics
- Factors Affecting the Distribution of Organisms
- Internal Structure of Plants and Animals
- Living Organisms
- Theories of Evolution
- Variation in Population
- Evidence of Evolution
- Evolution Among Organisms
- Nutrition
- Symbiotic Interactions of Plants and Animals
- Natural Habitats
- Structural, Functional and Behavioural Adaptations
- Transport
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