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- 1. Multiple ChoiceThe fact that all seven of the garden pea traits studied by Mendel obeyed the principle of independent assortment means that thehaploid number of garden peas is 7seven pairs of alleles determining these traits are on the same pair of homologous chromosomesseven pairs of alleles determining these traits behave as if they are on different chromosomesformation of gametes in plants is by mitosis only
- 2. Multiple ChoiceGiven the parents AABbCc x AabbCc, assume simple dominance and independent assortment. What proportion of the progeny will be expected to phenotypically resemble the first parent?1/41/83/43/8
- 3. Multiple ChoiceVermilion eyes is a sex-linked recessive characteristic in fruit flies. If a female having vermilion eyes is crossed with a wild-type male, what proportion of the F1 males will have vermilion eyes?100%25%50%75%
- 4. Multiple Choice
Which genes would show the highest frequency of crossing over?A-BA-DD-CB-C - 5. Multiple ChoiceWhat is the most probable mode of inheritance?X linked dominantautosomal dominantX linked recessiveautosomal recessive
- 6. Multiple ChoiceA couple who are both carriers for the gene for cystic fibrosis have two children who have cystic fibrosis. What is the probability that their next child will have cystic fibrosis?0%25%50%75%
- 7. Multiple ChoiceA woman with type O blood and a man with type AB have a child. What is the percent chance that the child has type B?0%25%50%100%
- 8. Multiple Choice
Males are more often affected by sex-linked traits than females because
males only have an X chromosome.
male hormones such as testosterone often exacerbate the effects of mutations on the X chromosome
female hormones such as estrogen often compensate for the effects of mutations on the X.
X chromosomes in males generally have more mutations than X chromosomes in females.
- 9. Multiple Choice
Which of the following is an example of polygenic inheritance?
pink flowers in snapdragons
The ABO Blood group in humans
Skin color in humans
Huntington's disease in humans
- 10. Multiple Choice
Females with Turner's syndrome have a high incidence of hemophilia, a recessive, X-linked trait. Based on this information, it can be inferred that females with this condition
Have an extra X chromosome
Have an extra Y chromosome
Lack a X chromosome
Have red blood cells that tend to clump.
- 11. Multiple Choice
Which of the following statements is true of linkage?
The closer two genes are on a chromosome, the lower the probability that a crossover will occur between them.
The observed frequency of recombination of two genes that are far apart from each other has a maximum value of 100%.
All of the traits that Mendel studied–seed color, pod shape, flower color, and others–are due to genes linked on the same chromosome.
Linked genes are found on different chromosomes.
- 12. Multiple Choice
Which of the following provides an example of epistasis?
Recessive genotypes for each of two genes (aabb) result in an albino corn snake.
The allele b17 produces a dominant phenotype, although b1 through b16 do not.
In rabbits and many other mammals, one genotype (ee) prevents any fur color from developing
In Drosophila (fruit flies), white eyes can be due to an X-linked gene or to a combination of other genes.
- 13. Multiple Choice
Which of Mendel's laws states that alleles are separated during meiosis?
Law of Dominance
Law of Segregation
Law of Independent Assortment
- 14. Multiple ChoiceThis type of inheritance pattern shows BOTH traits in possible offspringcomplete dominanceincomplete dominanceco-dominancedominant pattern
- 15. Multiple ChoiceThe genotype of the affected son and daughter at the bottom of this pedigree...could be homozygous dominantcould be homozygous recessivecould be heterozygousCan't tell
- 16. Multiple ChoiceHow many alleles (letters) do each person carry for a trait?1234
- 17. Multiple ChoiceWhat you see, or the physical appearance.GenotypePhenotypeHomozygousHeterozygous
- 18. Multiple ChoiceIdentify the mutation in the picture.InversionDeletionDuplicationTranslocation
- 19. Multiple ChoiceIdentify the mutation in the picture.InversionDuplicationDeletionTranslocation
- 20. Multiple ChoiceIdentify the mutation in the picture.DeletionInversionDuplicationTranslocation
- 21. Multiple ChoiceWhen can a mutation be passed on to offspring?only when the mutation is present during or occurs during mitosisonly when the mutation is present during or occurs during meiosiswhen the mutation occurs during mitosis or meiosiswhen the mutation occurs in somatic cells
- 22. Multiple ChoiceWhat process occurs during meiosis that can result in chromosomal disorders?crossing overnon-disjunctionanaphase Iprophase II
- 23. Multiple ChoiceWhat do experts say is the most common form of Down Syndrome?Trisomy 47Trisomy 46Trisomy 21Trisomy 23
- 24. Multiple Choice
A Wild type fruit fly (heterozygous for gray body
and red eyes) is mated with a black fly with
purple eyes.
OFFSPRING:
721- gray body/red eyes
751- black body/purple eyes
49- gray body/purple eyes
45- black body/red-eyes
What is the recombination frequency between
these genes?
6%
2%
12%
8%
- 25. Multiple ChoiceRed x white = pinkcodominancemultiple allelesincomplete dominanceepistasis
- Answer choicesTagsAnswer choicesTags