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Inheritance and genetic disorders
Biology revision
Inheritance and disorders
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Slide 1:
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Science
Upper Secondary (Key Stage 4)
GCSE
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Biology revision
Inheritance and disorders
Slide 1 - Diapositive
Which shape represents females
A
Triangle
B
Square
C
Rectangle
D
Circle
Slide 2 - Quiz
Which shape represents males
A
Triangle
B
Square
C
Rectangle
D
Circle
Slide 3 - Quiz
What does a carrier look like on a family tree diagram?
A
Full shaded
B
Not shaded
C
Half shaded
D
Full shaded circle
Slide 4 - Quiz
Which of the following is a genetic disorder?
A
Cystic fibrosis
B
Malaria
C
Asthma
D
Diabetes
Slide 5 - Quiz
What causes Down syndrome?
A
Environmental toxins
B
Viral infection
C
Extra copy of chromosome 21
D
Genetic mutation
Slide 6 - Quiz
Which disorder is caused by a recessive gene?
A
Huntington's disease
B
Phenylketonuria (PKU)
C
Sickle cell anemia
D
Fragile X syndrome
Slide 7 - Quiz
What is a Punnett square used for in genetic inheritance?
A
Measuring the genetic diversity within a population
B
Predicting the possible outcomes of a genetic cross
C
Identifying recessive traits in an individual
D
Determining the dominant gene in an organism
Slide 8 - Quiz
Which of the following accurately represents a dominant allele?
A
Expressed in the phenotype when present
B
Affects only one specific trait in an organism
C
Occurs more frequently in a population
D
Always passed on to the next generation
Slide 9 - Quiz
What is the term for an individual with two different alleles for a particular gene?
A
Heterozygous
B
Polygenic
C
Phenotypic
D
Homozygous
Slide 10 - Quiz
In genetic inheritance, what is a genotype?
A
The process of genetic recombination
B
The genetic makeup of an organism
C
The physical traits of an organism
D
The expression of genes in an individual
Slide 11 - Quiz
What is the main cause of cystic fibrosis?
A
Viral mutation
B
Bacterial infection
C
Defective CFTR gene
D
Environmental factors
Slide 12 - Quiz
Which body system is primarily affected by cystic fibrosis?
A
Respiratory system
B
Digestive system
C
Nervous system
D
Circulatory system
Slide 13 - Quiz
What is the average life expectancy of someone with cystic fibrosis?
A
Around 50 years
B
Around 30 years
C
Around 40 years
D
Around 60 years
Slide 14 - Quiz
How is cystic fibrosis diagnosed?
A
Genetic testing and sweat test
B
Biopsy and lung function test
C
Urine test and MRI
D
Blood test and X-ray
Slide 15 - Quiz
What is a common symptom of cystic fibrosis in infants?
A
Excessive weight gain
B
Failure to thrive
C
Regular bowel movements
D
Normal breathing pattern
Slide 16 - Quiz
What is a recessive gene?
A
A gene that is always expressed
B
A gene that is only expressed in the absence of its dominant counterpart.
C
A gene that is unrelated to dominant genes
D
A gene that is only expressed in the presence of its dominant counterpart
Slide 17 - Quiz
How are recessive genes represented in genetic diagrams?
A
By uppercase letters
B
By lowercase letters
C
By special characters
D
By numerical symbols
Slide 18 - Quiz
What is the likelihood of expressing a recessive trait when an individual carries two recessive alleles?
A
100%
B
50%
C
25%
D
0%
Slide 19 - Quiz
What are alleles?
A
Mutated chromosomes
B
Segments of DNA
C
Genetic mutations
D
Different forms of a gene
Slide 20 - Quiz
How many alleles do individuals inherit for each gene?
A
Three alleles
B
Two alleles
C
Four alleles
D
One allele
Slide 21 - Quiz
What is the term for alleles that are the same?
A
Homozygous alleles
B
Recessive alleles
C
Heterozygous alleles
D
Dominant alleles
Slide 22 - Quiz
What term is used to describe the physical appearance resulting from the combination of alleles?
A
Genotype
B
Genetic code
C
Phenotype
D
Chromosomes
Slide 23 - Quiz
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