Concept explainers
Three-spined stickleback fish live in lakes formed when the last ice age ended
a. In crosses between fish of the two different morphologies, the lack of bony armor segregates as a recessive trait that maps to the ectodermal dysplasia (Eda) gene. Comparisons between the Eda
b. Loss
Want to see the full answer?
Check out a sample textbook solutionChapter 18 Solutions
Genetic Analysis: An Integrated Approach (3rd Edition)
- Each calico cat has a unique pattern of white, black, and orange fur. Propose a mechanism that would give rise to the white fur.arrow_forwardIs the inability to make vitamin C likely a homologous or analogous trait for humans and orangutans (both of which are simian primates)?arrow_forwardWhat are the------ a. main three differences and three similarities between gametes of frog and fish. b. different Reproductive strategies in fishes? Explain with the help of examples. c. Draw reproductive tract of henarrow_forward
- Select all of the traits provided below that appear in this specimen:arrow_forwarda) Which two species are the most closely related? b) Are pike more closely related to lungfish or to gorillas?arrow_forwardChoose true or false for each of the following statements: A. Neanderthal DNA shows that they share a number of modern human traits, and likely interbred with human populations leaving Africa as they moved through Southwest Asia. B. The fate of the Neanderthals is clear from fossil and artifactual evidence - they simply died out about 27 000 years ago. C. Platyrrhines differ from catarrhines in the following ways: they have three premolars instead of two, they are found in Central and South America, and they have prehensile tails, feet, and hands. D. The Harvard Medical School bacteria video demonstrated the principles of gene flow and genetic drift. E.arrow_forward
- Give typing answer with explanation and conclusion In 1-2 sentence(s) describe one trait/adaption the fish has to its environment (brook trout)?arrow_forwardIN TRANSYLVANIA, SOME PEOPLE EXHIBIT TWO UNUSUAL TRAITS IN WHICH THEY HAVE VERY LONG FRONT TEETH AND THE INABILITY TO BE AWAKE WHEN THE SUN IS UP. BOTH OF THESE TRAITS APPEAR TO BE RECESSIVE. IF A WOMAN WHO IS HETEROZYGOUS FOR TEETH AND HOMOZYGOUS NORMAL FOR BEING IN THE SUN MARRIES A MAN WHO HAS BOTH THESE TRAITS, WHAT COULD BE THE PHENOTYPES AND GENOTYPES OF THEIR CHILDREN? USE A PUNNET SQUARE AND SHOW ALL WORK. LIST THE RATIOS FOR THE GENOTYPES AND PHENOTYPES.arrow_forwardYou are a researcher studying birds in an Indonesian rainforest. You have just discovered two new species whose beaks are markedly different, which you have named Laetiphonia orthorhynchus and Laetiphonia rhamphis. In particular, the beaks of L. orthorhynchus are very long, straight and pointed, whereas L. rhamphis have beaks that are quite short, wide and curved downwards. In further studies, you find that the same gene codes for beak shape in both species. In your own words, explain at least two ways that changes in gene expression could result in the differences you observe between these two species. Make sure to be specific in how your explanation applies to the bird species in this example.arrow_forward
- In a species of fish, the allele for long fins (F) is dominant over the allele for short fins (f). What will be the genotype and phenotype ratios for offspring do we get if we cross a long-finned homozygous male fish with heterozygous long-finned female fish? Questions: a. What are the possible genotypes of the egg the woman can produce? b. What are the possible genotypes of the sperm the man can produce? c. What is the genotype ratio for the offspring? d. What is the phenotype ratio for the offspring?arrow_forwardBased on the text for roaches: 1. Compare the genetic relationship of the parent pest and its offspring. USE THE WORD: genetically identical, genetic recombination PLEASE USE INFO BASED ON THE TEXT ONLYarrow_forwardIVialii ContenL Which of the following are NOT analogous traits? OVenomous fangs in cobras and vipers Spikes on the surface of hedgehogs and cactus Live birth in anacondas and rhinos Hairlessness in seals and manatees O Pectoral flippers in whales and sharksarrow_forward
- Human Heredity: Principles and Issues (MindTap Co...BiologyISBN:9781305251052Author:Michael CummingsPublisher:Cengage LearningBiology Today and Tomorrow without Physiology (Mi...BiologyISBN:9781305117396Author:Cecie Starr, Christine Evers, Lisa StarrPublisher:Cengage Learning