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Worksheets11SCIG Genetics quiz
Total questions: 20
Worksheet time: 10mins
A section of DNA with the code for a trait
Gene
Allele
Chromosome
Protein
An alternative version of a gene
Gene
Allele
Chromosome
Protein
The physical/observable trait that results from genes + environment
Genotype
Phenotype
Chromosome
Cell
Long, thread like structures in the nucleus carrying genes along their length
Genes
Alleles
Chromosomes
Replicants
How many chromosomes do human gametes have?
46
2
20
23
Which of these shows the base pairing rule of DNA?
A+T C+G
A+C G+T
A+G C+T
Which of these is the building block of DNA?
Nucleotide
Amino acid
Sugar
RNA
Which of these is the building block of proteins?
Amino acid
Nucleotide
Sugar
Phosphate
The genetic makeup of an organism: which pair of alleles it inherited
Genotype
Phenotype
Genome
A dominant allele is...
Always expressed when present
Never expressed when present
Only expressed if there are two copies
Only expressed if there is no recessive allele
A recessive allele is...
Never expressed when present
Always expressed when present
Only expressed if the dominant allele is present
Only expressed if the dominant allele is absent
Having two different alleles for a gene is called...
Heterozygous
Homozygous
Heteroallelic
Homoallelic
A permanent change in the base sequence of DNA is...
Mutagen
Mutation
Gene
Phenotype
A somatic mutation...
Occurs in gametes - can be inherited
Occurs in body cells - cannot be inherited
Occurs in gametes - cannot be inherited
Occurs in body cells - can be inherited
A gametic mutation...
Occurs in gametes; can be inherited
Occurs in gametes; cannot be inherited
Occurs in body cells; can be inherited
Occurs in body cells; cannot be inherited
An individual has the dominant phenotype: their genotype could be DD or Dd. To do a test cross you will breed them with...
DD
Dd
dd
Which of these facts about meiosis is false?
Produces gametes
Makes 4 daughter cells
Occurs in testes and ovaries
Makes genetically identical cells
Which of these facts about asexual reproduction is FALSE?
Produces genetic clones
Only requires one parent
Very slow process compared to sexual reproduction
Which of these is a BENEFIT of sexual reproduction?
Very fast
Only requires one individual
High energy cost
Produces genetic variation by mixing up parents' DNA
Why is genetic variation important?
It isn't
Gives the possibility that a species can adapt to environmental change
Makes mates more attractive
Makes life interesting
