Heredity: Question Preview (ID: 3231)


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An organism's physical appearance is its
a) heterozygous b) genotype c) phenotype d) cross
A Punnett square shows
a) only the dominant alleles in a genetic cross b) the likelihood that a particular event will occur c) only the recessive alleles in a genetic cross d) all the possible outcomes of a genetic cross
Factors that control traits are called
a) genes b) pedigrees c) mutations d) parents
What is probability?
a) the results from a series of events b) the number of times a coin will land heads up c) the likelihood that a particular event will occur d) genotype
If you cross a blue pet (BB) x a yellow pet (bb) what is the probability that the offspring will be blue?
a) 25% b) 50% c) 75% d) 100%
What is a mutation?
a) Any change that is harmful to an organism b) Any change in a gene or chromosome c) A purebred d) Any change in the genotype of a cell
What is a karyotype?
a) blood taken from a newborn baby b) a picture of a baby before it is born c) a picture of the chromosomes in a cell of the developing baby d) the fluid that surrounds the baby before it is born
A female is represented by ____ and a male by _____.
a) XX, XY b) XX, YY c) XY, XX d) Xx, Yy
Sex-linked genes are genes on
a) the Y chromosome only b) the X chromosome only c) the other 22 pairs of chromosomes d) the X and Y chromosomes
A carrier is a person who has
a) one recessive and one dominant allele for a trait b) more than 2 alleles for a trait c) 2 recessive alleles for a trait d) 2 dominant alleles for a trait
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