Campbell Biology in Focus; Modified Mastering Biology with Pearson eText -- ValuePack Access Card -- for Campbell Biology in Focus (2nd Edition)
2nd Edition
ISBN: 9780134433776
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman
Publisher: PEARSON
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Chapter 11.3, Problem 3CC
WHAT IF? A rooster with gray feathers and a hen of the same phenotype produce 15 gray, 6 black, and 8 white chicks. What is the simplest explanation for the inheritance of these colors in chickens? What
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For number 15-24. In man, assume that spotted skin (S) is dominant over non-spotted skin (s) and that
wooly hair (W) is dominant over non-wooly hair (w). Cross a heterozygous parent (SsWw) with a
heterozygous parent (Ssww) Give genotypic and phenotypic ratios of offspring.
15-18. What is the probability of producing spotted skin with non-wooly hair?
8/16
4/16
3/16
6/16
8/16
A.
B.
C.
D.
E.
19-21. What is the probability of producing non-spotted skin with non-wooly hair?
A
2/16
B.
4/16
C.
1/16
D.
6/16
22-24. What is the probability of producing non-spotted skin with wooly hair?
A 3/16
В. 4/16
с. 1/16
D. 9/16
E. 8/16
Inheritance of a single gene:
7. A tortoiseshell cat mates with an orange cat:
What is the probability of their kitten having
all-orange fur?
[Choose ]
[Choose ]
0.25
What is the probability of their kitten having
tortoiseshell coloration?
0.5
0.875
1.0
0.625
What is the probability of their kitten having
all-black fur?
0.375
0.33
0.75
What is the probability that their black kitten
will be male?
[Choose ]
What is the probability that their
tortoiseshell kitten will be male?
[Choose ]
EXAMPLE PROBLEM Two black female mice are crossed with a brown male. In several litters, female I produced 9 black offspring and 7 brown; female II produced 57 black offspring. What deductions can you make about the inheritance of black and brown coat color in mice? What are the genotypes of the parents? Dominance and recessive describe which of two possible phenotypes are exhibited when two different alleles occur in the same individual.
Chapter 11 Solutions
Campbell Biology in Focus; Modified Mastering Biology with Pearson eText -- ValuePack Access Card -- for Campbell Biology in Focus (2nd Edition)
Ch. 11.1 - DRAW IT Pea plants heterozygous for flower...Ch. 11.1 - List all gametes that could be made by a pea plant...Ch. 11.1 - Prob. 3CCCh. 11.2 - For any gene with a dominant allele A and...Ch. 11.2 - Two organisms, with genotypes BbDD and BBDd, are...Ch. 11.2 - Prob. 3CCCh. 11.3 - Incomplete dominance and epistasis are both terms...Ch. 11.3 - Prob. 2CCCh. 11.3 - WHAT IF? A rooster with gray feathers and a hen of...Ch. 11.4 - Beth and Tom each have a sibling with cystic...
Ch. 11.4 - MAKE CONNECTIONS In Table 11.1, note the...Ch. 11 - DRAW IT Two pea plants heterozygous for the...Ch. 11 - A man with type A blood marries a woman with type...Ch. 11 - A man has six fingers on each hand and six toes on...Ch. 11 - Prob. 4TYUCh. 11 - Flower position, stem length, and seed shape are...Ch. 11 - Prob. 6TYUCh. 11 - Prob. 7TYUCh. 11 - Prob. 8TYUCh. 11 - Prob. 9TYUCh. 11 - Prob. 10TYUCh. 11 - In tigers, a recessive allele that is pleiotropic...Ch. 11 - Prob. 12TYUCh. 11 - Imagine that you are a genetic counselor, and a...Ch. 11 - Prob. 15TYUCh. 11 - Prob. 16TYUCh. 11 - Prob. 17TYU
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- Crossing Pea Plants: Mendels Study of Single Traits Stem length in pea plants is controlled by a single gene. Consider the cross of a true-breeding long-stemmed variety to a true-breeding short-stemmed variety in which long stems are completely dominant. a. If 120 F1 plants are examined, how many plants are expected to be long stemmed? Short stemmed? b. Assign genotypes to both P1 varieties and to all phenotypes listed in (a). c. A long-stemmed F1 plant is self-crossed. Of 300 F2 plants, how many should be long stemmed? Short stemmed? d. For the F2 plants mentioned in (c), what is the expected genotypic ratio?arrow_forward. In four-o’clocks, the allele for red flowers is incompletely dominant to the allele for white flowers, so heterozygotes have pink flowers. What ratios of flower colors would you expect among the offspring of the following crosses: (a) pink × pink, (b) white × pink, (c) red × red, (d) red × pink, (e) white × white, and (f) red × white? If you specifically wanted to produce pink flowers, which of these crosses would be most efficient?arrow_forward. You buy an ornamental flowering plant with red flowers. Red flowers are found when both a D and an E allele are present. Either a D or an E allele produces orange flowers and ddee plants have yellow flowers You cross your red-flowered plant with an orange-flowered plant. You obtain offspring in the following ratios: 3 red : 1 yellow : 4 orange. What are the genotypes of the red-flowered and orange-flowered parent plants?arrow_forward
- Q5. When Mendel crossed a large number of tall pea plants with short pea plants, all F1 plants were tall. The F2 generation was created by self-pollinating the F1 plants. (a) Complete a genetic cross of F1 to show the genotypes and phenotypes of the parents and offspring. (b) Complete a genetic cross of F2 to show the genotypes and phenotypes of the offspring. (c) State the ratio of phenotypes expected in the F2 offspring. (d) Mendel's First Law of inheritance states that, “...the alleles of a given locus segregate into separate gametes." Explain how the genetic diagram above proves this law. (AC 2.1)arrow_forward. Consider the imaginary trait, bristles with split-ends, a trait hypothesized to be X-linked dominant. In a cross, the P1 virgin females were homozygous wild type while the males had bristles with split-ends. The F1 84 males were all wild type while the 90 females all had split-ends. In addition, the data for the F2 generation revealed 26 wild type males, 35 wild type females, 29 split-end males and 40 split-end females. Is this what is to be expected? Use chi-square to prove your position.arrow_forwardO e. Parent 2: Parent 1: Parent 2: ¡Ai QUESTION 9 Bi QUESTION 8 Let's assume that, in dragons, red scales (B) are dominant to green scales (b), and long tongues (S) are dominant to short tongues (s). The genes that determine these characteristics assort independently. A homozygous red, long-tongued dragon is crossed with a homozygous green, short-tongued dragon. If an F1 dragon is crossed to a homozygous green and homozygous short-tongued dragon, what phenotypes and proportions are expected in the offspring? O a. 100% green and long-tongued O b. ½ green and short-tongued & ½ red and long-tongued O c. ½ red and short-tongued & ½ green and long-tongued O d.% red and long-tongued, % red and short-tongued, ½ green and long-tongued, % green and short-tongued O e. 9/16 red, long-tongued, 3/16 green, long-tongued, 3/16 red, short-tongued, 1/16 green, short-tongued Save and Submit to save and submit. Click Save All Answers to save all answers. 000 MacBook Airarrow_forward
- A true-breeding rabbit with agouti (mottled, grayish brown) fur crossed with a true-breeding rabbit with chinchilla (silver) fur produces all agouti offspring. A true-breeding chinchilla rabbit crossed with a true-breeding Himalayan rabbit (white fur with pigmented nose, ears, tail, and legs) produces all chinchilla offspring. A true-breeding Himalayan rabbit crossed with a true-breeding albino rabbit produces all Himalayan offspring. Explain the inheritance of the fur colors.arrow_forwardThe following pedigree shows the pattern of inheritance of red green color blindness in a family. Females are shown as circles and males as squares; the squares or circles of individuals affected by the trait are filled in red. What is the chance that a son of the third-generation female indicated by the arrow will be color-blind if the father is a normal man? If the father is color-blind?arrow_forwardIn sparrows: • brown feathers are dominant (B) and dun feathers are recessive (b) • yellow beaks are dominant (Y) and orange beaks are recessive (y) You have a brown-feathered, yellow-beaked sparrow of unknown genotype, and conduct a testcross. What phenotypic ratio would you expect to see as a result of the cross if your unknown individual was BBYY? (In the answers, feather color is given first, then beak color.) O 1 dun,yellow : 1 dun,orange O 1 brown,yellow :1 dun,yellow 3 brown,yellow : 1 dun,yellow O 1 brown,yellow:1 brown, orange : 1 dun,yellow : 1 dun,orangearrow_forward
- Non-Mendelian Inheritance Quiz Match each of the following examples to the appropriate type of non-Mendelian inheritance. 1. A homozygous recessive genotype for the gene that encodes phenylalanine hydroxylase (which breaks down the amino acid phenylalanine) causes lighter skin color, a musty odor, differences in intellectual development, and seizures. 2. In pea plants, alleles of Gene W control flower color, with the dominant allele (W) leading to purple flower color, and the recessive allele (w) leading to white flower color. Usually, a genotype of WW or Ww leads to purple flowers. However, when Gene C is homozygous recessive, WW or Ww plants always have white flowers. 3. In mallard ducks, feather coloring is controlled by Gene F. A dominant allele (F) leads to green head feathers, while a recessive allele (f) leads to brown head feathers. In male mallards, inheritance of one or more F alleles always leads to the green head feather trait. But female mallards always have brown head…arrow_forwardAKS 7b/7e Mendelian Inheritance In pea plants the allele for round seeds (R) is dominant to the allele for oval seeds (r). In a cross between the two heterozygous plants what percentage of the offspring will have round seeds? * O 75% O 50% O 25% O 100% This is a required question In pigeons, the allele for normal feathers (F) is dominant to the allele for frizzy feathers (f). If a purebred, normal feathered bird (FF) is crossed with a frizzyarrow_forwardGenetics 181 Rule of Incomplete Dominance When two different pure-breeding strains are crossed, and their offspring show a blending of phenotypes, then neither allele is dominant. This is easily recognized when the phenotype is somewhere between two extremes. Counting the parents, there are three phenotypes (black, white, grey) being expressed in these flowers instead of only two, and that third phenotype is intermediate between the other two. This heterozygous condition is called incomplete dominance. 1. On the chart you did earlier, which of the three hair types (wavy, curly, or straight) represents incomplete dominance-the blended heterozygous condition? 2. You cross a herd of red cattle with white cattle and all of the calves appear to be roan (reddish white). Is this an example of incomplete dominance? How do you know? 3. You cross a blue flowering pea plant with a white flowering pea plant and all of the offspring are blue flowered. Is this an example of incomplete dominance? How…arrow_forward
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