Crawfish are shelled organisms that live in shallow freshwater rivers. They can have antennae of different lengths. Two parents with medium length antennae have offspring. One of their offspring has short antennae, and one has long antennae. How did the offspring end up with traits that are different from the traits of their parents? How did the gene combinations result in these traits?

Crawfish are shelled organisms that live in shallow freshwater rivers. They can have antennae of different lengths. Two parents with medium length antennae have offspring. One of their offspring has short antennae, and one has long antennae. How did the offspring end up with traits that are different from the traits of their parents? How did the gene combinations result in these traits?

Biology Today and Tomorrow without Physiology (MindTap Course List)

5th Edition

ISBN:9781305117396

Author:Cecie Starr, Christine Evers, Lisa Starr

Publisher:Cecie Starr, Christine Evers, Lisa Starr

Chapter15: Animal Evolution

Section: Chapter Questions

Problem 2CT

See similar textbooks

Similar questions

How are individuals II-1 and II- 2 related? A.They are siblings B.They are married C.They are cousins D.They are not related
If two groups of mice live on opposite sides of a river, they are two separate species. What two processes must have occurred in order for them to have become separate species?
According to "The Complex Evolution of Homo sapiens", what is the significance of the L3 gene and who was the L3 woman? A.Only individuals within North and South America descended from the L3 woman. B.All individuals within Africa are descended from the L3 woman. C.All individuals outside of Africa and who live in the Old World are descended from the L3 woman. D.All individuals outside of Africa are descended from the L3 woman
Why are monozygotic twins genetically identical, whereas dizygotic twins share only 50% of their genes on average?a. Monozygotic twins tend to look more similar.b. Monozygotic twins develop from two different eggs fertilized by the same sperm, whereas dizygotic twins develop from two eggs fertilized by two different sperm.c. Monozygotic twins develop from a single egg fertilized by one sperm, whereas dizygotic twins develop from a single egg fertilized by two different sperm.d. Monozygotic twins develop from a single egg fertilized by a single sperm, whereas dizygotic twins develop from two eggs fertilized by two different sperm.
The text explains that selective breeding involves breeding animals or plants for specific desirable traits. For example, humans bred different types of dogs to accomplish certain jobs. Farmers breed chickens for having meat and laying a greater amount of eggs. Cattle are often selectively bred either for more meat or for more milk production. The text also notes that breeding animals for size and strength interferes with natural animal processes. Based on this information presented in the text, who benefits from the traits different animals are bred for? a) humans breeding the animals b) the animals being bred by the humans c) both the humans breeding the animals and the animals being bred by the humans d) animals not being bred by humans
A subpopulation of a species of birds migrates to a different location from the rest of the species for breeding purposes. How might the genes change in the subpopulation? A. Their genes would change randomly and eventually revert to normalcy, which would allow the subpopulation to return to the main population. B. Their genes would change to better allow them to survive and reproduce in their new location. C. Their genes would not change at all and they would merely be a subpopulation living in a different location. D. Their genes would change so that they would continue to be well-adapted to their former location.
Blue snorks are dominant to pink snorks. You come across a field of all blue snorks and mate them with a pink snork. The resulting progeny are all blue again. What are the most likely genotypes of the snorks from the field? Select one: a. Heterozygous for the dominant allele. b. Homozygous for the dominant allele. c. Homozygous for the recessive allele.
In sheep, a recessive gene causes the lamb to lose consciousness when startled. A farmer breeds two sheep (that have never lost consciousness) and their first offspring lost consciousness two days after its birth. What were the genotypes of the parents?
Lou, a researcher, is examining two different fireflies, and each firefly is homozygous for a mutation that is inherited in an autosomal recessive manner. Lou has discovered that the two fireflies both show defects in flying. Lou would like to determine if both fireflies have mutations in the same or different genes, so he mates the two fireflies together. The resulting offspring all can fly normally. What would this result suggest? Select all that apply. Group of answer choices A) The two parent fireflies contain mutations in different genes B) The two parent fireflies contain mutations in the same gene C) This is an example of complementation D) This is an example of the failure to complement
Why did Galton modify the quincunx? a. Because the distribution of a trait (e.g., height) in offspring is more widespread than that of their parents. b. Because the distribution of a trait (e.g., height) in offspring has a higher mean relative to that of their parents. c. Because the distribution of a trait (e.g., height) in offspring is less widespread than that of their parents. d. Because the distribution of a trait (e.g., height) in offspring remains constant relative to that of their parents.
If you wanted to crossbreed some Felis lybica to eventually have a domestic cat, what traits would you have to change in the wildcat?
Assume that a lineage of rainbow trout accumulates mutations over time that make the trout a uniform dark brown with orange spots and produce a dorsal fin shape that is very different from all other rainbow trouts. This group of rainbow trouts also has lips that are twice the size of other rainbows and they have a much narrower body. How do we know when the natural selection of such characteristics results in a new species of fish?