DP Biology Questionbank

Description

Overview of the essential ideas for this topic.

10.1: Meiosis leads to independent assortment of chromosomes and unique composition of alleles in daughter cells.

10.2: Genes may be linked or unlinked and are inherited accordingly.

10.3: Gene pools change over time.

Directly related questions

• 15M.1.HL.TZ1.34: Skin colour is a trait controlled by polygenic inheritance. Which statement is correct?A. Skin...
• 15M.1.HL.TZ2.25: Which is a statement of Mendel’s law of independent assortment? A. Allele pairs separate during...
• 15M.1.HL.TZ2.23: The curly hair of the coat of Selkirk Rex cats is due to the presence of the allele SC.  These...
• 15M.2.HL.TZ1.2a (i): A study of 600 adolescents in Sweden showed that milk consumption has a positive effect on height...
• 15M.3.HL.TZ1.1e: Discuss briefly whether there is genetic evidence to show a common ancestor for the...
• 15M.2.HL.TZ1.5a: Outline the processes that occur during the first division of meiosis.    
• 15M.3.HL.TZ1.1c: State with a reason whether the genetic evidence shows that the western coyote and the grey wolf...
• 15M.3.HL.TZ1.1d: The northeastern coyote has more wolf-like skull features than the southern Ontario coyote. ...
• 15M.3.HL.TZ1.1a: Outline the genetic evidence that Canis populations have hybridized.
• 15M.3.HL.TZ1.1b: Compare the genetic data for southern Ontario coyotes and northeastern coyotes.
• 15M.3.HL.TZ1.2c (ii):  Define gene pool.
• 15M.3.HL.TZ2.2c: A species is often defined as a group of similar individuals that interbreed in nature and...
• 13M.2.HL.TZ2.2a (ii): In a strain of soybeans, high oil content (H) in seeds is dominant to low oil content (h)  and...
• 13M.2.HL.TZ2.2b (ii): Determine, with a reason, whether this karyotype shows that non-disjunction has occurred.
• 13M.2.HL.TZ2.3b: Explain how meiosis promotes variation.
• 13M.2.HL.TZ2.3a: The probability of extinction of a species increases if the population is small with low genetic...
• 13M.3.HL.TZ1.2b: Outline how isolation of a gene pool can lead to evolution.
• 13M.2.HL.TZ2.2a (iii): In a strain of soybeans, high oil content (H) in seeds is dominant to low oil content (h)  and...
• 13M.1.HL.TZ1.33: In fruit flies (Drosophila melanogaster) grey body is dominant to black body and long wings are...
• 13M.1.HL.TZ1.34: Human skin colour shows continuous variation.  What does this indicate about the pattern of...
• 13M.1.HL.TZ2.34: How does meiosis cause Mendel’s law of independent assortment? A. Linked genes are randomly...
• 13M.1.HL.TZ2.35: A test cross of linked genes was performed with fruit flies (Drosophila melanogaster). What is...
• 13M.1.HL.TZ2.36: Why do humans inherit continuous variation with regard to height? A. The trait for tallness is...
• 13M.3.HL.TZ2.2a: Define gene pool.
• 13M.3.SL.TZ1.12 a: Compare convergent and divergent evolution.
• 13M.3.SL.TZ1.12 b: Explain how polyploidy can contribute to speciation.
• 11M.1.HL.TZ1.33: The diagram below shows chromosomes during meiosis. How many chromosomes and chiasmata are...
• 11M.2.HL.TZ2.7b: Describe how human skin colour is determined genetically.
• 11M.3.HL.TZ1.1b: Identify the breeding combination that results in the lowest probability of breeding.
• 11M.3.HL.TZ1.1d: Scientists concluded that speciation is taking place in these populations. Discuss the evidence...
• 11M.3.HL.TZ1.1a: Identify the highest and lowest probabilities of breeding for individuals of the same variety...
• 11M.3.HL.TZ1.1c: Analyse the probability of breeding between individuals from the same lake.
• 11M.1.SL.TZ1.15: What happens in crossing over? A. Exchange of genetic material between homologous chromosomes ...
• 11M.3.SL.TZ1.10d: Scientists concluded that speciation is taking place in these populations. Discuss the evidence...
• 11M.3.SL.TZ1.10a: Identify the highest and lowest probabilities of breeding for individuals of the same variety...
• 11M.3.SL.TZ1.10b: Identify the breeding combination that results in the lowest probability of breeding.
• 11M.3.SL.TZ1.10c: Analyse the probability of breeding between individuals from the same lake.
• 11M.3.SL.TZ2.10a (i): Identify the species with the shortest mean beak length.
• 11M.3.SL.TZ2.10a (ii): Determine the difference in the mean beak length of the two populations of Yellow-throated...
• 11M.3.SL.TZ2.10a (iii): Compare the range of variation in beak length of the Yellow-throated Warblers in Midwest to the...
• 11M.3.SL.TZ2.10b: Suggest an advantage for the longer beaks of Yellow-throated Warblers in Delmarva.
• 12M.2.HL.TZ1.4c: Explain how meiosis results in genetic variation in gametes.
• 12M.1.HL.TZ1.33: Maize (Zea mays) contains 20 chromosomes in a diploid cell. How many chromosomes will be in each...
• 12M.1.HL.TZ2.34: What causes genetic variety in the formation of gametes during meiosis? A. Crossing over in...
• 12M.1.HL.TZ1.34: What causes variation in both sexually and asexually reproducing organisms? A. Mutations B....
• 12M.3.HL.TZ2.2c: Describe one type of barrier that may exist between gene pools.
• 09M.2.HL.TZ1.2a (i): State the genotype of the heterozygous parent using the correct notation.
• 09M.2.HL.TZ1.2a (ii): Identify which individuals are recombinants in this cross.
• 09M.2.HL.TZ1.2a (iii): Explain what has occurred to cause these results.
• 09M.2.HL.TZ2.3b: Explain, using a named example, how polygenic inheritance gives rise to continuous variation.
• 09M.1.HL.TZ1.35: Which of the following processes result in the production of recombinants? I. Crossing over...
• 09M.1.HL.TZ1.34: When do chiasmata form in meiosis? A. During prophase I B. During metaphase I C. During anaphase...
• 09M.1.HL.TZ2.23: Which of the following conclusions did Mendel make from his experiments? A. Dominant genes are...
• 09M.1.HL.TZ2.31: Male flies, heterozygous for both grey body and normal wings, were mated with black-bodied,...
• 09M.1.HL.TZ2.30: If a heterozygous grey fruit fly is mated with a black-bodied fruit fly, what proportion of the...
• 10M.2.HL.TZ2.7b: Outline the formation of chiasmata during crossing over.
• 10M.2.HL.TZ2.7c: Explain how an error in meiosis can lead to Down syndrome.
• 10M.1.HL.TZ2.35: Which are the possible recombinants in a dihybrid test cross involving the linked genes...
• 10M.1.HL.TZ1.12: What is a suspected heterozygous individual crossed with in a test cross? A. Homozygous dominant...
• 10M.1.HL.TZ1.34: A test cross resulted in these recombinants: Which of the following was the parental test...
• 10M.3.SL.TZ2.11b: There has been a change of thinking; moving from gradualism to punctuated equilibrium...
• 11N.1.HL.TZ0.17: When does an unequal division of cytoplasm occur? A. During meiosis in the apical meristem B....
• 11N.3.SL.TZ0.10c: Discuss gradualism and punctuated equilibrium as ideas about the pace of evolution.
• 12N.1.HL.TZ0.34: In humans, wavy hair is dominant to straight hair and free ear lobes are dominant to fixed ear...
• 10N.2.HL.TZ0.1a(ii): The activity of α-amylase was tested at successive concentrations of gibberellin. Determine the...
• 10N.2.HL.TZ0.1b: Discuss the consequence of crossing gid1-1 heterozygous rice plants amongst themselves for food...
• 10N.2.HL.TZ0.1a(i): State which variety of rice fails to respond to gibberellin treatment.
• 09N.2.HL.TZ0.3a: The genes described above form a linkage group. Define linkage group.
• 09N.2.HL.TZ0.3b: A cross is made between squirrels of the following genotypes. Using a similar format, identify...
• 09N.2.HL.TZ0.3c: Explain how the recombinants are formed during meiosis.
• 09N.3.SL.TZ0.12a: Compare sympatric speciation and allopatric speciation.
• 09N.3.SL.TZ0.12c: Discuss the concept of punctuated equilibrium.
• 15N.1.SL.TZ0.13: During which stage of meiosis does crossing over usually occur? A. Prophase I B. Metaphase...
• 15N.1.HL.TZ0.34: At which stage of meiosis does a pair of sister chromatids separate? A. Metaphase I B. Anaphase...
• 15N.1.HL.TZ0.35: In a fruit fly experiment, grey body, normal winged (homozygous dominant) fruit flies were mated...
• 15N.2.HL.TZ0.4a: Determine the phenotype of Aabb.
• 15N.2.HL.TZ0.4b: Compare the information that could be deduced when the genotypes are presented as AaBb or
• 15N.2.HL.TZ0.4c: Deduce one possible recombinant offspring of individual after a test cross.
• 15N.3.HL.TZ0.3: Discuss evolution by gradualism and punctuated equilibrium.
• 13N.1.HL.TZ0.35: In a variety of tulips, V is the allele for variegated colour and C is the allele for compound...
• 13N.2.HL.TZ0.2c: Using an example, describe polygenic inheritance.
• 13N.3.HL.TZ0.2a: State the name given to the situation where two alleles of a gene persist indefinitely in a...
• 13N.3.HL.TZ0.2b: CF is a recessive condition that affects approximately 1 in 2500 births in Australia. Calculate...
• 13N.3.HL.TZ0.2c: Using CF as an example, distinguish between allele frequency and gene pool.
• 09N.1.HL.TZ0.34: How many autosomes are there in a human sperm?A. 1B. 22C. 23D. 46
• 09N.1.HL.TZ0.35: What is polygenic inheritance?A. A character that is controlled by two or more genesB. A...
• 16M.1.HL.TZ0.21: The statement is about the genetic control of cat coat colour. In a cross between two double...
• 16M.1.HL.TZ0.19: In which situation are alleles exchanged? A. During the separation of sister chromatidsB. In the...
• 16M.1.HL.TZ0.22: This is the cross that led to the discovery of non-Mendelian ratios in Morgan’s experiments with...
• 16N.1.SL.TZ0.16: The diagram shows a pedigree chart. What does it reveal about the inheritance of the blood...
• 16M.2.HL.TZ0.4b: Starting from the concept of gene pool, explain briefly how populations of early vertebrates...
• 16N.1.HL.TZ0.35: Some of the ratios that Morgan investigated in genetic crosses did not correspond with expected...
• 16N.2.HL.TZ0.4c: Outline what is required for speciation to occur.
• 16N.2.HL.TZ0.4a: List two causes of variation within a gene pool.
• 16N.1.HL.TZ0.36: Fossil records show that black bears increased in size during the Ice Age and decreased in size...
• 17M.1.SL.TZ1.1: Which structure found in eukaryotes has a single membrane? A. Nucleus B. Lysosome C....
• 17M.1.HL.TZ1.35: Which gametes can result from the following crossover?        
• 17M.1.HL.TZ2.20: The graph shows variations in beak size for the bird Geospiza fortis on an island in the...
• 17M.1.HL.TZ1.36: What can lead to reproductive isolation after just one generation? A. Polyploidy B. Increased...
• 17M.1.HL.TZ2.19: The genetic determination of dogs’ coats can be quite complex, with many different genes acting...
• 17M.2.HL.TZ1.7a: Discuss the role of genes and chromosomes in determining individual and shared character features...
• 17M.2.HL.TZ2.8b: Draw a labelled diagram of the formation of a chiasma by crossing over.
• 17M.2.HL.TZ1.7b: Outline the process of speciation.
• 17M.2.HL.TZ2.7a: Outline how reproductive isolation can occur in an animal population.
• 17M.3.HL.TZ2.1c: Explain the concept of directional selection with respect to this example.
• 17N.2.HL.TZ0.05a: Describe the process of crossing over.
• 17N.2.HL.TZ0.05b: Explain the reason for linked genes not following the pattern of inheritance discovered by Mendel.
• 17N.1.HL.TZ0.35: How do the concepts of gradualism and punctuated equilibrium differ? A. The timing of...
• 17N.1.HL.TZ0.36: In a plant, dark leaves are dominant to pale leaves and yellow seeds are dominant to white...