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WorksheetsGenetics and Inheritance
Total questions: 22
Worksheet time: 28mins
Alternative forms of a gene at a particular position on homologous chromosomes are called:
Alleles
Chromosomes
Locus
Hyprids
An organism that has two of the same alleles for a particular genetic characteristic is called:
Homozygous
Heterozygous
Hybrid
Dominant
An organism that has two different alleles for a particular genetic characteristic is called:
Heterozygous
Homozygous
Recessive
Pure-bred
The allele that is expressed in the heterozygous condition is called the (a) allele.
The allele that is only expressed if the dominant allele is absent is called the (a) allele.
The physical or observable characteristics of an organism which are determined by its genetic make-up as well as the environment in which it lives is called the _____________.
Phenotype
Genotype
Dominant Allele
Recessive Allele
Genetic variation can result from:
Crossing over and random segregation during meiosis
Mutations
Random fusion of gametes during fertilisation
Influence of the environment
Splitting of cells during mitosis
The scientist known as the 'father of genetics' is _____________________.
Gregor Mendel
Rosalind Franklin
James Watson
Francis Crick
In a case of complete dominance within pea plants, if the tall allele is dominant and the short allele is recessive, the offspring of the pea plants will be ________________.
Tall in hight
Short in hight
Medium in hight
No clear outcome
In a case of incomplete dominance within pea plants, if a red-flowered plant is crossed with a blue-flowered plant, the offspring of the pea plants will have ________________.
Red Flowers
Blue Flowers
Purple Flowers
Flowers with red and blue patches
A mixture of some red and some blue coloured flowers
In a case of co-dominance within pea plants, if a yellow-flowered plant is crossed with a white-flowered plant, the offspring of the pea plants will have ________________.
Yellow flowers
White flowers
A mixture of some yellow and some white flowers
Flowers spotted with both yellow and white
In the case of dihybrid crossing within pea plants, if a recessive purple-flowered, recessive tall plant is crossed with a dominant white-flowered, dominant short plant, the offspring of the pea plants will be ________________.
White-flowered and short
Purple-flowered and tall
White-flowered and tall
Purple-flowered and short
A mixture of both white and purple flowers with some tall and some short plants
If "A" represents the gene for white flowers and "a" represents the gene for red flowers, what is the probability of these two plant's offspring having red flowers?
0%
25%
50%
100%
If "A" represents the gene for yellow flowers and "a" represents the gene for pink flowers, what is the probability of these two plant's offspring having yellow flowers?
0%
25%
50%
100%
The pair of chromosomes that determine sex-linked traits are the ________.
21st pair
23rd pair
24th pair
46th pair
13th pair
Sex-linked traits in humans do NOT include:
Haemophilia
Colour blindness
Hight
Eye colour
The image shows an example of ______________ mutation.
Substitution
Deletion
Addition
Mutations can be classed as:
Harmful
Harmless
Useful
Harmless, harmful or useful
Harmless or harmful
List TWO benefits of genetically modifying crops:
List ONE disadvantage of genetically modifying crops:
The production of genetically identical offspring by implanting a cloned embryo into the uterus of a surrogate mother is called ________________________.
Reproductive cloning
Therapeutic cloning
Stem cell cloning
Asexual cloning
The production of cells that exactly match the cells of a patient is called _________________________.
Reproductive cloning
Therapeutic cloning
Stem cell cloning
Asexual cloning
