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AQA GCSE Genetics and Inheritance
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What is the probability of a mother and father producing a boy?
 
50%
 
100%
 
0%
 
33%
How many pairs of chromosomes does a human body cell contain in the nucleus?
 
23
 
46
 
24
 
48
Which genotype would produce the male phenotype?
 
XY
 
XX
Which genotype would produce the female phenotype?
 
XX
 
XY
What nitrogenous bases are found in DNA?
 
A, T, C, G
 
A, B, C, D
 
A, R, U, G
 
A, B, T, H
What is a molecule of DNA (nucleotide) made of?
 
A phosphate, a pentose sugar, and a nitrogenous base
 
A phosphate, a hexose sugar, and a nitrogenous base
 
A biphosphate, a pentose sugar, and a nitrogenous base
 
A triphosphate, a hexose sugar, and a nitrogenous base
How many affected males are in the pedigree analysis chart?
 
3
 
5
 
4
 
7
Which example is an inherited disorder?
 
Cystic Fibrosis
 
Cancer
 
Type 2 Diabetes
 
The Flu
What is the percentage chance of the offspring having the homozygous recessive genotype?
 
50%
 
100%
 
25%
 
0%
What is the percentage chance of the offspring inheriting the dominant allele?
 
100%
 
75%
 
50%
 
0%
Which option is a homozygous recessive allele?
 
bb
 
BB
 
Bb
Which option is a heterozygous allele?
 
Bb
 
BB
 
bb
Which option is a homozygous dominant allele?
 
BB
 
Bb
 
bb
What does phenotype mean?
 
The characteristics expressed by a collection of alleles
 
The mutations found within certain strands of DNA
 
A collection of chromosomes within an individual
What is an allele?
 
Different versions of the same gene
 
A sex cell
 
The genotype
 
Two or more chromosomes
What is a gene?
 
A small section of DNA
 
Information made out of chromosomes
 
Part of the mitochondria
 
A diploid cell
What is a chromosome?
 
Long thread of DNA
 
A gene
 
A jelly like substance
 
It controls what goes in and out of the cell
What is a gamete?
 
Sex cell
 
Diploid cell
 
Body cell
 
Section of DNA
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