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WorksheetsQuiz on Genetics Heredity
Total questions: 10
Worksheet time: 5mins
(1) Carrie is studying the genes of two fruit flies in her lab. She knows what alleles they have. She wants to know the potential combinations of alleles their offspring could inherit. Which of these would help Carrie identify the potential combinations?
Punnett Square
Pedigree
Allele
(2) Which choice best defines heredity?
the joining of sex cells to form the first cell of a new organism
the passage of genetic instructions from one generation to the next
the technology that enables scientists to insert genetic information from one organism into another
(3) Which of these choices describes a segment of DNA that determines a specific trait in a person, such as attached earlobes?
a phenotype
a chromosome
a gene
(4) Which statement about genes is ALWAYS true?
Genes are located on chromosomes within the cell nucleus.
Many genes are required to determine a single trait.
Both inherited traits and acquired traits are determined by genes.
(5) Which of these is an example of a trait a person may have because of heredity?
scar on a forehead
blister on a finger
dark hair
(6) Which statement about a zygote that forms by fertilization is correct?
A zygote has one-half the full set of chromosomes from each parent.
A zygote has two full sets of chromosomes, one set from each parent.
A zygote has a half set of chromosomes, one-forth from each parent.
(7) Which type of reproduction involves two parents and results in offspring that are not genetically identical to either parent?
Binary fission
Sexual reproduction
Spore formation
(8) The diagram shows a Punnett square for one trait. Which of these should be placed in the box with the question mark?
aa
AA
Aa
(9) Look at the diagram of sexual reproduction. Which of these statements correctly describes the genetic information in the diagram?
Cell A is genetically identical to cell C.
Cell C has genes from cell A and genes from cell B.
Cell B contains the same genetic material as cell C.
(10) Each pea plant has a gene that determines seed color. One version of the gene is for green seed color, and the other version of the gene is for yellow seed color. Which of these choices is another word for the two versions of the gene for seed color?
Allele
Genotype
Phenotype
