27 Questions
Which of the following is an example of variation within a species?
A mule
What is the process by which the information from a gene is used to produce a feature or a protein?
Gene expression
What is the term for the specific position of a gene on a chromosome?
Locus
Which of the following is true about DNA isolation from plant tissue?
The DNA is protected from digestion by denaturing enzymes at 60°C
What is the role of RNA polymerase in transcription?
Forming the mRNA strand
Where does translation occur in the cell?
Cytoplasm
What is the function of tRNA in protein synthesis?
Delivering amino acids
Which of the following best describes the Law of Segregation according to Mendel’s First Law?
Each characteristic is governed by a pair of factors (genes)
What is the term used to describe the physical expression of the genotype or genotype plus environment?
Phenotype
What is the term used to describe the genetic make-up of an individual?
Genotype
What is the term used to describe the situation when both alleles are different?
Heterozygous
Which of the following is true about DNA replication?
DNA replication occurs during interphase of mitosis and meiosis
What is the function of messenger RNA (mRNA)?
Carries genetic information from the DNA to the ribosomes
What is the difference between RNA and DNA?
RNA contains the base thymine while DNA contains uracil
What is the purpose of DNA profiling?
To identify criminals from crime scenes
Which of the following is true about sex-linked characteristics?
They are determined by genes that occur on the X chromosome
What is the phenotype of a female who is a carrier for a sex-linked condition?
She shows the normal condition
What is the chance of producing a haemophiliac child when a female carrier for haemophilia has a child with a normal male?
25%
In non-nuclear inheritance, where is the non-nuclear DNA passed on by?
The female in the cytoplasm of the ovum
Which of the following correctly describes the phenotype ratio of the F1 generation resulting from a cross between a heterozygous tall pea plant and a heterozygous tall pea plant?
3 tall : 1 dwarf
In cows, a parent with a red coat and a parent with a white coat produce offspring with a mottle color called roan. This type of inheritance is known as:
Incomplete dominance
Which of the following correctly describes the phenotype ratio of the F2 generation resulting from a cross between two purple-flowered plants from the F1 generation?
3 purple : 1 white
In most mammals, including humans, XX is female and XY is male. This type of sex determination is an example of:
Monohybrid cross
Which of the following best describes Mendel's second law of independent assortment?
During gamete formation, any member of a pair of factors has an equal chance of entering a gamete with either member of any other pair of factors.
In a dihybrid cross between a homozygous dominant pea plant and a homozygous recessive pea plant, what is the ratio of phenotypes in the second filial generation (F2)?
9 tall red : 3 tall white : 3 dwarf red : 1 dwarf white
What happens when genes are located on the same chromosome and are inherited together?
They are linked and do not assort independently.
What is the term for genes found on the X or Y chromosome?
Sex-linked genes
Test your knowledge on Mendel's second law, the Law of Independent Assortment, with this quiz! Learn about how factors are randomly distributed during gamete formation and how it relates to the inheritance of traits in organisms. Explore examples such as the crossing of pea plants with different characteristics.
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