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WorksheetsKnowledge Check: Heredity and Genetics
Total questions: 7
Worksheet time: 17mins
Match the following vocabulary terms:
the passing of traits from one generation to the next
heredity
one form (variation) of a gene
allele
the allele/trait that is always expressed
dominant
the allele/trait that can be masked by a dominant one and is only expressed when both alleles are recessive
recessive
A flamingo parent passes traits such as its hooked bill to its offspring. Through which of the following processes does this passage of genetic instructions from parents to offspring occur?
heredity
extinction
natural selection
genetic engineering
A beagle puppy has long ears, like its parents. Which of the following best describes how traits such as long ears are passed from one generation of dogs to the next?
The puppy inherits genes from its parents and possesses all ofthe traits of both parents.
The puppy inherits one gene from each parent, and each gene contains information for half of the puppy's traits.
The puppy inherits pairs of genes from its parents, and these gene pairs determine the traits the puppy will possess.
The puppy inherits pairs of genes from each parent, and these genes contain chromosomes that determine the puppy's traits.
Two rabbits, one with white hair and one with black hair, produce an offspring. The diagram below shows the rabbit parents and offspring. In rabbits, black hair (B) is a dominant trait, while white hair (b) is a recessive trait. Which of the following statements best explains the young rabbit's hair color?
The young rabbit inherited at least one allele for black hair from one of its parents.
The young rabbit inherited at least two alleles for white hair from one of its parents.
The young rabbit inherited at least two alleles for black hair, one from each of its parents.
The young rabbit inherited at least two alleles for white hair, one from each of its parents.
The hairline pattern called a widow’s peak is an inherited trait that is easily visible in humans. For people who express this trait, their hairline forms a V shape above their forehead. People who do not express the trait for a widow’s peak have a straight hairline above their forehead. Which statement BEST explains how traits such as a widow’s peak are inherited?
Offspring can express traits from genes they inherited from both parents.
Offspring can only express traits from genes they inherited from just one parent.
Offspring can express traits from genes they inherited from a source other than the parents.
Offspring can only express traits from genes they inherited from the parent that is the same gender.
A mother and father have two daughters. The daughters have some similar and some different physical features. Which statement BEST explains why the girls’ physical appearance includes both similar and different features?
one daughter received fewer genes than the other
each daughter received a different number of genes from each parent
the daughters received a random set of genes from both parents
one daughter received all her genes from her father and the other daughter received all her genes from her mother.
