Classical Genetics Unit Quiz 7
Genotypes provide information about: ______________.
Two heterozygous individuals are crossed. What percentage of their offspring will be heterozygous?
In beans yellow (Y) is dominant to green (y) and smooth (S) is dominant to wrinkled (s). What are the possible genotypes for the offspring of the following cross: Yyss and Yyss.
- YYSS, YYSs, YYss, YySS, YySs,YySs, Yyss, yySS, yySs, yyss
- YYSs, YYss, YySs,YySs, Yyss, yySs, yyss
- YYss, yyss
- YYss, Yyss, yyss
What percentage of the offspring will be yellow and wrinkled in the example in the previous question?
In humans females are
- none of these
What would be the result of fertilization if egg and sperm were produced by mitosis rather than meiosis?
- The resulting offspring would have the same amount of DNA as the parents.
- The resulting offspring would have half the amount of DNA as the parents.
- The resulting offspring would have twice as much DNA as the parents.
In humans, there are 3 alleles for blood type: A, B, O. A and B are co-dominant over O. A male with O type blood mates with a female with AB type blood. What is the chance that their child will be type A?
In peas purple is dominant to white for flower color. A purple flower is crossed with a white flower. All the offspring (over 100 plants) produce purple flowers. What is the genotype of the purple flower?
- Either PP or Pp
A heterozygous germ cell undergoes meiosis. The gametes will
- either have the dominant or the recessive allele
- have both the dominant or the recessive allele
- only have the recessive allele
- only have the dominant allele
Red (R) flower color is incompletely dominant to white (r) flower color. Two pink flowers are crossed. What percentage of their offspring will be pink?
Red (R) flower color is incompletely dominant to white (r) flower color. Which genotype(s) produce red flowers? Select all that apply.
In humans, there are 3 alleles for blood type: A, B, O. A and B are co-dominant over O. A male with O type blood mates with a female with AB type blood. What is the chance that their child will be heterozygous?
An individual that expresses the recessive trait of a dominant/recessive gene
- must be homozygous
- must be heterozygous
- can be either homozygous or heterozygous
Autosomal means that the gene is found on
- the X chromosomes
- the Y chromosome
- either the X or the Y chromosome
- neither on the X nor the Y
Somatic mosquito cells have 6 chromosomes. How many chromosomes do gametes have?
In humans, the condition for normal blood clotting (H) is dominant to hemophilia (h). A male who has normal blood clotting mates with a woman who is a carrier. If they have a son, what is the probability that he will have this condition?