Mendel’s Laws of Heredity Flashcards
Which of the following statements correctly describes the inheritance of traits in humans?
Both the parents produce different haploid gametes via meiosis that fertilize to form a diploid zygote.
The presence of genes contributes to the entire cell functioning and unique character traits. How are these genes inherited?
The two alleles in a particular gene pair are inherited, one from the mother and one from the father, during fertilization.
What are alleles?
Alleles are an alternate form of a gene.
Which of the following traits are inherited from parents to offspring?
Eye color.
Which of the following correctly defines genotype?
Genotype is a specific combination of alleles found in an individual.
The presence of two varying alleles of a gene is called a ____________ individual.
Heterozygous
Which of these statements describes a dominant allele?
A dominant allele always expresses itself phenotypically even in the presence of other alleles.
Which of the following is a correct definition of recessive allele?
Recessive alleles are the ones that express phenotypically only when two identical copies of alleles are present.
Which of these is seen in the human blood group system?
Multiple allelism.
When the phenotype of two alleles is expressed partially, its called:
Incomplete dominance.
Which of the following correctly describes the law of segregation?
It states that allele pairs segregate during gametogenesis and reunite randomly during the fertilization process.
Which of the following best describes the law of independent assortment?
It states that the different traits or pairs of traits segregate independently of another pair during gametogenesis.
Identify the homozygous recessive type of allelic combination.
tt
WW and ww are the allelic combinations that are responsible for red and white flowers, respectively. What do WW, ww, and the flower colors represent?
WW and ww are the genotypes; red and white flowers are the phenotypes.
In a particular species of plant, orange flower petals are dominant over recessive white flower petals. What will be the genotype of the F1 generation if a homozygous dominant parent crosses with a homozygous recessive parent?
(Note that P = dominant allele, and p = recessive allele)
All F1 generations will be heterozygous dominant.
