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A planet is inhabited by creatures that reproduce with the same hereditary patterns seen in humans. Three
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- Two pea plants that are true-breeding for recessive white flowers are mated and their offspring analyzed. Which of the following statements about this situation is true? Group of answer choices A)The offspring represent the P generation. B)The gametes produced by the offspring will carry only one allele for this gene. C)Both parents are referred to as heterozygotes. D)Half of the offspring will be true-breeding for white flowers.arrow_forwardIn cattle, the gene for hornless (H) is dominant to the gene for horned (h), the gene for black (B) is dominant to that of red (b), and the gene for white face, or Hereford spotting, (S) is dominant to that for solid color (s). A cow (female) that is heterozygous for all traits is inseminated by a bull (male) of the genotype bbhhSs. What is the probability of obtaining a calf that is a black, hornless bull with Hereford spotting?arrow_forwardIn the world of Weeping angels, those with pointy wings are (A_), while those with round wings are (aa). In the efforts to explore this extraordinary species, you wish to determine the genotype of a pointy winged angel. Luckily, you have trapped a round winged angel that you can cross your pointy winged angel with. If the pointy winged angel is homozygous what phenotypic ratio do you expect from their offspring? (Pointy wing: round wing) Group of answer choices a. 1:0 b. 2:1 c. 1:1 d. 3:1arrow_forward
- In human blood chemistry, the I gene directly determines ABO blood antigens and the H gene takes the H-substance precursor and makes the H-substance. IAIO Hh x IBIO Hh. Given the following cross, help me with the question please 17. What type of allele interaction is this, the influence of alleles at gene H versus those at gene I?A) dominance B) recessive C) incomplete dominance D) epistasis 18. What is the likelihood of a child with a type O serotype based on a blood test?A) 0.0 < p < 0.1 D) 0.3 < p < 0.4 G) 0.6 < p < 0.7 J) 0.9 < p < 1.0B) 0.1 < p < 0.2 E) 0.4 < p < 0.5 H) 0.7 < p < 0.8C) 0.2 < p < 0.3 F) 0.5 < p < 0.6 I) 0.8 < p < 0.9arrow_forwardSex determination in birds is different from that in humans. The sex chromosomes in birds are called Z and W, because males have two of the same chromosome (ZZ), whereas females have two different chromosomes (ZW). There is a Z-linked allele in some birds that causes the death of the embryo when the normal dominant allele is not present. What would be the sex ratio in the living offspring of a cross between a male heterozygous for the lethal allele and a normal female? A) What are the genotypes of the parents? Male____ Female____ B) Which gametes would each form? Male____ Female____ C) Draw your Punnett square below and determine the sex ratios of living offspring.arrow_forwardA species of fish can either have dominant red tins (R) or recessive white fins (r). Fin lengths can either be dominant long (L) or recessive short (1). A dihybrid cross between two of these fish occurs. Each fish is heterozygous for the traits of fin color and fin length. How many possible gamete genotypes will each parent fish produce? A-1 B-4 C-2 D-3arrow_forward
- Can you please not type the answer can you write it on a paperarrow_forwardThere are two genetically-determined traits that are seen in a species of salamander. The S-gene codes for spotting: SS or Ss = white spots; ss = no spots. The W-gene codes for skin texture: WW or Ww=wrinkly; ww = smooth. If a cross is done between SSWW and ssww parents, what genotype(s) would you expect to see in the offspring of this dihybrid cross? NOTE: Assume no recombination. O Ss, ss, WW. ww O SW, sw, Sw, sw O SsWw O SSWW, sswwarrow_forwardIn the video game Animal Crossing: New Horizons, flowering breeding is based in genetics. Each flower's color is determined by the genotype at three or four unlinked genes: R, Y, W, and S. The genotype of the elusive blue rose is RR YY ww ss. In the game, one way to get a blue rose is to cross two roses with the Rr Yy Ww ss genotype. A) What types of gametes and in what proportions will a Rr Yy Ww ss rose produce? B) In a cross Rr Yy Ww ss x Rr Yy Ww ss what are the possible offspring genotypes and at what frequency will they each appear? Show your work. C) What proportion of the offspring of the cross will be blue roses?arrow_forward
- A homozygous red pigmented female beetle (bb) is bred with a black pigmented male of unknown genotype. It’s unknown if the male homozygous dominant (BB) or heterozygous (Bb) for the pigment trait. The color of their offspring will help identify the genotype of the male. What do you call this method used to determine the genotype of the male beetle? Explain your answer by using Punnett square to show possible offspring genotypes.arrow_forwardAs seen in the photo, Labradors come in three colors-- black, brown and yellow. What is the genetic basis for these different coat colors? One gene produces melanin, a pigment which is deposited in the dog's fur and makes the color dark. With this gene, allele B (black) is dominant to allele b. Only in the case of a recessive homozygote (bb) will the dog's phenotype be brown. The regulatory gene is separate from the melanin gene but it acts as a switch, either turning the melanin gene on or turning it off. Allele E is dominant and allows for the melanin to be deposited in the dog's fur ("on" switch), but if the switch gene is a recessive homozygote, the melanin is blocked ("off" switch) and a yellow dog is the result! 1. Two other Labradors mate and produce puppies. Their genotypes are Bbee and BbEe. What color are each parent and what are the phenotypic rations of their offspring in the F1 Generation? Show your work with a Punnett square.arrow_forwardPart A) You cross a fly with straight wings with a fly with curved wings to produce the F1 generation, all of which exhibit straight wings. In the F2 generation, you observe 65 straight-winged flies and 16 curved-wing flies. Based upon the results, which phenotype is recessive? Part B) You think this trait is controlled by a single gene, but the F2 numbers don’t quite match a 3:1 expected ratio. Perform a chi-square analysis to determine if the variation you observe is due to chance or not. Based upon this determination, would you keep or reject the “null hypothesis”? Show your work and explain your reasoning.arrow_forward
- Human Heredity: Principles and Issues (MindTap Co...BiologyISBN:9781305251052Author:Michael CummingsPublisher:Cengage Learning