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Year 10 GCSE Genetics Flashcards | StudBud
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Year 10 GCSE Genetics
Year 10 GCSE Genetics
41 terms
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1
What are the building blocks of DNA?
Nucleides
Amino acids
Genes
Bases
2
What type of cell division replaces dead or worn out body cells?
Reproduction
Meiosis
Binary fission
Mitosis
3
What is the function of a gene?
Contains DNA
Codes for amino acid sequence
Codes for fatty acid sequence
Makes a characteristic
4
What term is used to describe what is produced immediately after fertilisation?
Embryo
Zygote
Clone
Gamete
5
Cystic fibrosis is a disease of...
Lungs
Mitochondria
Cell membranes
Pancreas
6
What is monohybrid inheritance?
Inheritance of a single allele
Inheritance of a single gene
Inheritance in a single organism
Inheritance of a single genome
7
Polydactyly is what type of allele?
Mutant
Recessive
Dominant
Abnormal
8
With what organism did the father of modern genetics work?
Potatoes
Tomatoes
Peas
Beans
9
If 2 organisms heterozygous for a recessive condition breed, what is the ratio of offspring obtained?
25%
9 : 3 : 3 : 1
1 : 1
3 : 1
10
The theory of inheritance of acquired characteristics was proposed by...
Darwin
Lamarck
Attenborough
Wallace
11
A protein containing 12 amino acids arose from a length of DNA containing...
48 bases
12 bases
24 bases
36 bases
12
How many different amino acids are there in living organisms?
20
4
3
10
13
Why are some tumours termed malignant?
They invade healthy tissue
They arise from uncontrolled meiosis
They arise from uncontrolled mitosis
They do not spread to other parts of the body
14
An organism with two identical copies of a gene is called...
Heterozygous
Recessive
Dominant
Homozygous
15
Cloning is the process of making identical copies of genes, tissues or organisms.
False
True
16
If 2 identical alleles are needed for an organism to show the characteristic, it is...
Weak
Dominant
Recessive
Strong
17
GM organisms have been ....
Gene modulated
Genome moderated
Genetically modified
Genetically mutated
18
What name is given to cells before they specialise to perform a particular function?
Differentiated
Stem cells
Tissues
Embryo
19
How many building blocks are required to add one amino acid to a protein?
4
2
3
5
20
What is a disadvantage of asexual reproduction?
No genetic variation in offspring
Habitat may only contain one organism
Too many offspring are produced
Clones are formed
21
What type of allele is cystic fibrosis?
Recessive
Dominant
22
How many copies of each gene do humans have?
23
46
2
1
23
Down's syndrome is caused by ...
A dominant allele
A missing chromosome
A recessive allele
An extra chromosome
24
Evolution occurs by which process?
Inheritance
Natural selection
Mutation
Reproduction
25
People who are heterozygous for sickle cell anaemia are less likely to get which disease?
Malaria
TB
Sickle cell anaemia
Cancer
26
A gene probe can be used for genetic screening because...
It will penetrate the nucleus of a cell
It is a very common DNA sequence
It binds to a specific gene
It is sensitive to UV light
27
What are the different forms of a gene called?
Genetics
Alleles
DNA
Characteristics
28
What is fertilisation?
Gametes fuse
Reproduction
Male and female gametes meet
Nuclei of gametes fuse
29
What factors could cause variation within a species?
Genes
Environment
Any of these
Mutation
30
A human with two X chromosomes is...
Has polydactyly
Female
A carrier of cystic fibrosis
Male
31
Where can stem cells be found?
Early embryo, bone marrow
Early embryo, bone marrow, plant meristems
Early embryo
Anywhere where cells are actively dividing
32
What is the best way to describe the number of chromosomes in a human body cell?
48
46
23 pairs
23
33
The name of the monk deemed to be the father of modern genetics is...
Crick and Watson
Mendel
Mendeleev
Darwin
34
Where is the site of protein synthesis in a bacterial cell?
Plasmids
Nucleus
Ribosomes
Mitochondria
35
Darwin's theory of evolution states that all species have evolved from...
Monkeys
A common ancestor
Simple life forms
Recently discovered related species
36
What is a carcinogen?
A benign tumour
A cancer causing agent
A malignant tumour
A chemical used in chemotherapy
37
Heterozygous means...
2 different copies of the gene
Characteristic is dominant
2 identical copies of the gene
Characteristic is recessive
38
What term describes organisms with identical DNA?
Clowns
Crones
Copies
Clones
39
Which of these is the smallest?
Gene
Chromosome
DNA
Genome
40
How many different building blocks make up DNA?
6
3
5
4
41
What is a tumour?
An uncontrolled mass of dividing cells
Cancer
Malignant mass of cells
Benign
