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Course: AQA A Level Biology 7402
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AQA A Level Biology 7402

1. Biological Molecules

0/102

2. Cell Structure

0/95

3. Exchange and Transport

0/98

4. Genetics, Variation and Interdependence

0/94

5. Energy Transfers In and Between Organisms (A Level only)

0/63

6. Organisms Respond to Changes in their Environments (A Level only)

0/93

7. Genetics, Populations, Evolution and Ecosystems (A Level only)

0/55

8. The Control of Gene Expression (A Level only)

0/72

9. Exam Guidance and Skills

0/38
Quiz

7.4.7 Required Practical- Investigating Species Distribution – Unit exam questions

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  • Questions count: 12
  • Passing grade: B+
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1.
IGCSE Biology 18.4 Selection - Question 1
IGCSE Biology 18.4 Selection - Question 1
A
B
C
D
2.
IGCSE Biology 19.5 Populations - Question 11
IGCSE Biology 19.5 Populations - Question 11
A
B
C
D
3.
At which time point in the graph below does the size of the population reach the carrying capacity for the ecosystem?
SAT Biology - Question 264
A
B
C
D
E
4.
In pea plants, tall (T) is dominant to short (t). A cross Tt x Tt gives what ratio of tall to short?
1 : 1
all tall
3 : 1
1 : 2 : 1 tall to short
5.
Mendel chose the pea plant for all of the following reasons EXCEPT:
It has clear traits with two contrasting forms
All of its traits show incomplete dominance
It naturally self-pollinates and can be cross-pollinated by hand
It grows quickly and produces many seeds
6.
A dihybrid test cross gives mostly parental phenotypes and few recombinants. The best explanation is:
Epistasis
Codominance
The genes are autosomally linked
Independent assortment
7.
A dihybrid cross of two double heterozygotes gives a phenotype ratio of
1 : 1 : 1 : 1
3 : 1
9 : 3 : 3 : 1
1 : 2 : 1
8.
This is a characteristic of a population in Hardy-Weinberg equilibrium.
SAT Biology - Question 218
A
B
C
D
E
9.
Which statement best describes Genotype?
An interaction in which the allele of one gene masks or modifies the expression of a different gene.
A situation in which both alleles in a heterozygote are fully expressed in the phenotype.
The combination of alleles an organism carries for a particular gene.
A statistical test comparing observed with expected frequencies to decide whether any difference is due to chance.
10.
Why can Hardy-Weinberg equilibrium occur only in large populations?
Why can Hardy-Weinberg equilibrium occur only in large populations?
Large populations are likely to have more variable environments.
More individuals means less chance for natural selection to occur.
Genetic drift is a much stronger force in small versus large populations.
Large populations make random mating virtually impossible.
Large populations tend to last longer than small ones.
11.
A person with blood group AB shows which type of inheritance?
Sex linkage
Epistasis
Recessive inheritance
Codominance
12.
Complete the statement: Aa × Aa gives a ______ ratio.
Complete the statement: Aa × Aa gives a ______ ratio.
3 : 1
Allele
Probability rules
Law of segregation
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Part of 7. Genetics, Populations, Evolution and Ecosystems (A Level only) — see every lesson and quiz in this unit.
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