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WorksheetsInheriting Genes Pre-assessment
Total questions: 10
Worksheet time: 5mins
The chance that a specific outcome will occur each time an event happens is called:
risk
probability
allele
gene
The probability of a coin toss resulting in heads is:
100%
75%
50%
25%
Which of the following is true of a dominant allele?
It is expressed whether a copy of the allele is present or not.
It is expressed only when two copies are present.
It is never expressed.
It is expressed even if only one copy is present.
Which of the following is shown by a Punnett Square diagram?
the cells of an organism
all the chromosomes of an organism
all the potential allele combinations an offspring could inherit from its parents
only the alleles actually inherited by a given offspring
Suppose there are two possible alleles for the freckles gene: F representing freckles and f representing no freckles. The F allele is dominant to the f allele. Which of the following genotypes would result in a person having no freckles?
FF
Ff
ff
None of the above
Suppose there are two possible alleles for the freckles gene: F representing freckles and f representing no freckles. The F allele is dominant to the f allele.
Which of the following are possible genotypes for the children of two parents who both have the FF genotype for freckles?
FF
Ff
ff
Both FF and Ff
Juan wants to predict what alleles a puppy might inherit from two dogs that have the alleles DD and Dd. He makes a Punnett square like the one shown. Which of the following predictions about the puppy's alleles can Juan make using this model?
It will have a 1/4 chance of inheriting one recessive allele.
It will have a 1/2 chance of inheriting one dominant allele.
It will have a 100% chance of inheriting one recessive allele.
It will have a 1/2 chance of inheriting two dominant alleles.
Caroline is explaining chromosome inheritance during sexual reproduction to her family. She starts to sketch a model that shows the number of chromosomes in each kind of human cell. What numbers should Caroline write in the blanks below cell B and C?
B: 23 C: 23
B: 23 C: 46
B: 46 C: 23
B: 46 C: 69
Justin and Katie are siblings that have the same parents. Justin has brown hair like his father. Katie has blonde hair like her mother. Which correctly states the cause of Justin and Katie's hair color?
Katie only inherited chromosomes from her mother.
Katie inherited a different combination of alleles than Justin did.
Katie and Justin inherited a different number of chromosomes.
Katie inherited a gene for hair color from only one of her parents.
In humans, a biologically female child inherits an X chromosome from both parents (XX) while a biologically male child inherits an X chromosome from the mother and a Y chromosome from the father. Suppose a family has 4 children, all of whom have happened to be girls. Which of the following is true about the next child these parents have?
The probability of this child being a boy is 50%.
There is an increasing probability of having a boy with each child that is added to the family.
The probability of this child inheriting a Y chromosome from the father is 100%
There is a 75% probability this child will be a boy.
