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In a karyotype analysis, X and Y chromosomes represent sex chromosomes.
Name the scientist who discovered the X chromosome.
Concept: Chromosomal Theory of Inheritance
Jacob is genetically a carrier of the disorder that affects the shape of the RBCs, as shown in the diagram below. His son James suffers from the same disorder.
- Give the biochemical reason for the disorder that changes the shape of the RBCs, as shown above.
- Draw a Punnett square to show the genotype of the mother of James.
- Name and define the type of 'point mutation' responsible for this disorder.
Concept: Human Genetic Disorders
Consider the following information and answer the question that follows:
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Make a single pedigree chart using the above information to show the pattern of inheritance of phenylketonuria (PKU) in the family of Reshma.
Concept: Chromosomal Theory of Inheritance
Transcription is the transfer of genetic code from a DNA molecule to ______.
Concept: Transcription
Initiation codon of protein synthesis in Eukaryotes is ______.
Concept: Transcription
Give one significant contribution to the following scientists:
Sanger
Concept: Human Genome Project
What is the central dogma?
Concept: Transcription
Explain the mechanism of transcription in a prokaryotic cell.
Concept: Transcription
Give four adaptations in flowers pollinated by insects.
Concept: Adaptive Radiation
Name and define the three types of natural selection.
Concept: Darwin’s Theory of Natural Selection (Darwinism)
The largest unit in which gene flow is possible is :
(1) Organism
(2) Population
(3) Species
(4) Genes
Concept: Darwin’s Theory of Natural Selection (Darwinism)
State Hardy-Weinberg’s principle.
Concept: Hardy Weinberg’s Principle
Differentiate between Directional natural selection and Disruptive natural selection.
Concept: Hardy Weinberg’s Principle
Explain the evolution of the long neck of giraffe according to Charles Darwin.
Concept: Darwin’s Theory of Natural Selection (Darwinism)
What is the Founder's effect?
Concept: Hardy Weinberg’s Principle
Give a mathematical expression for Hardy Weinberg's principle.
Concept: Hardy Weinberg’s Principle
A population of 200 fruit flies is in Hardy Weinberg equilibrium. The frequency of the allele (a) 0.4. Calculate the following:
Frequency of the allele (A).
Concept: Hardy Weinberg’s Principle
A population of 200 fruit flies is in Hardy Weinberg equilibrium. The frequency of the allele (a) 0.4. Calculate the following:
The number of homozygous dominant fruit flies.
Concept: Hardy Weinberg’s Principle
A population of 200 fruit flies is in Hardy Weinberg equilibrium. The frequency of the allele (a) 0.4. Calculate the following:
The number of homozygous recessive fruit flies.
Concept: Hardy Weinberg’s Principle
