Sexual Selection Lab Report Sample

Various experiments and measurements were performed in the field in order to compare the two types of rodents. The following is a list of the data collected through multiple observations over a span of two years. We captured 100 rats of each rodent population, and we found the average weight, length, hind limb, and forelimb measurements. In addition, we conducted experiments in regards to their top speed, average height that they could leap, gestation time, and average time spent in the courtship display.

The crested gecko lives in New Caledonia, which is northeastern to Australia. This part of the country is tropical and has very humid jungles which keep the gecko’s skin moist. The crested gecko’s body over time has adapted to this environment. In particular its tail,

The alligator is one of the largest living reptiles today. In North America, they inhabit freshwater swamps or wetlands in the south, from Texas to North Carolina. Distinguishing features include the fourth mandibular tooth, the long, broad snout, and the thick, scaly skin. Like some other reptiles, alligators have temperature-dependent sex determination, which is a non-genetic way of determining the sex ratio of offspring produced. Unlike other reptiles, alligators exhibit parental care; they nest-guard, and even offer evidence of maternal care for juveniles after hatching. Through the reviewing of multiple experiments conducted on Alligator mississippiensis, evidence is provided for the temperature-dependent mode of sexing and maternal

The purpose of this lab is to better understand the process of natural selection and its effects on a population by conducting a stimulation. The stimulation consist of predators (students with either a spoon, fork or a knife) and prey (different types of beans). Furthermore, students will be able to determine how phenotype (bean color and utensil used by the predators) influences natural selection. Students will also demonstrate their quantitative skills by determining the predator survival and reproduction, bean survival and reproduction, and by calculating the total percent of the population. Additionally, students will be able to identify the occurrence of evolution by natural selection after the end of generation three. Moreover, students

b. Transnational trafficking of W – transportation of W from one country to another, usually for the purposes of prostitution

Secondly, we meet Jerry Johnson and his crew in Southwest Texas hunting for unique type of lizard. The lizard’s reproductive procedure is that these female companions have the potential to reproduce with the use of sexual intercourse. Each baby lizard contains 100 percent of its mother’s genes. So with that in mind the baby is an identical clone of its mother. Some have considered that the lizards would have to have some sort of lesbian

Julie Carter I see that we all think different and that make us a unique person because the two test I took was Race Implicit Association test and Sexuality Implict Association Test and I see you took two different ones. I understand how you feel that you got to be cautious about the fat and thin because you do not want you daughter feel a type way or be insecure about her weight or how she look , because I got two daughters and my oldest daughter skin and my youngest is short and blessed , I want my daughter to feel comfortable the way they are and I always remind them I love them for who they are and they are perfect the size they are. I grew up working hard and I work and raise my children I am not a stay at home mom .

Varanus Indicus or commonly known as monitor lizard are mainly found in riverbanks and coastal forrest in Africa and all across Asia. Monitor lizards are tan, brown, grey or green in color. They are reptiles of 4.7 to 122 inches in size. Monitor lizards have long necks, powerful tails and claws, and well-developed limbs.They have a long, specialized tongue with a tip that is highly sensitive to smell and taste. The tongue is extended to pick up scent chemicals, and is then retracted into the mouth where the scents are analyzed using an organ on the roof of the mouth. Their powerful jaws allow them to swallow large prey. The head of monitors is tapered, and there are distinct ear holes. Monitor lizards are omnivorous depending on where they

The lizard gave virgin birth to 11 eggs, but only 8 seem to be developing normally. They were in different Zoos, at the time researchers speculate that the giant lizards could of change from sexual to asexualreproduction, they found the way to clone themselves without a male. After this was documented, scientists reported about the snakes. Reports show that reptiles can hold on to sperm for several years, so initially researchers considered that the lizard’s eggs had a father. After this happened scientifics recommended that the species should not be isolated, they started to be afraid that they will start to clone

Sexual dimorphism is the physical differences between males and females of the same species. (Example: color, size, shape, etc.) The Dilophosaurus were described as 10 feet tall and spotted with black and yellow. The underbellies were bright green and the crests were red and black striped and formed a “V” shape. At the scene in the book, Dr. Grant, Lex, and Tim were floating down river and two Dilophosaurus stood at the river bank up ahead. Dr. grant realized that the two Dilophosaurus were performing a mating ritual (Which contradicts what was stated in the book earlier since the Dilophosaurus was not a breed that contained frog DNA and so the Dilophosaurus can’t have changed genders to mate.) when he noticed some sexual dimorphism. One of the Dilophosaurus was described as smaller in size . The spots were smaller and the crest was duller as well. “Standing on the riverbank were two dilophosaurs. The ten-foot-tall bodies were spotted yellow and black. Underneath, the bellies were bright green, like lizards. Twin red curving crests ran along the top of the head from the eyes to the nose, making a V shape above the head...Grant noticed that the animal on the right was smaller, with smaller spots on its back, and its crest was a duller red- “I’ll be damned,” he said. “It’s a mating ritual.” ”(Michael Crichton, Jurassic Park- 1990, Google Pdf-page 122) There is no evidence to support sexual dimorphism. There

From our experiment, we are unable to reject that female crickets do not choose their mates based on their calling song. The t-test value did not give us a significant difference in the female’s view time of the male’s for us to say that our hypothesis is valid. Looking at the values from Figure 4 though we can see the total viewing time among the different males, which shows the male with the louder calling song generally had more time spent in front of his side.

For this reflective piece, I graded myself 5/5 as I provided reasoning for the features that I allowed this species to have, and the advantages that they would provide in the species’ survival. Moreover, I linked many of the characteristics to it’s ancestor and showed their phylogenetic relationship, and incorporated biological terms to do so. Additionally, I described a range of morphological, behavioural, and physiological characteristics of the species, and provided a labelled visual depiction of what this species would like to aid the understanding of my

Dietary and environmental factors play a key role in many aspects of life, whether human or animal. This paper will discuss the many dietary and environmental factors that affect the sexual selection as well as sexual dimorphism, specifically in lizards. Sexual selection is a type of natural selection where one sex does the choosing of mates for the other sex, and members of the same sex are rooted against each other to compete for mates. In order for a mate to attract a female with a high reproductive fitness, it is important to do a little showing off, and this is where sexual dimorphism comes in. Sexual dimorphism is the differences between two sexes of the same species. There are many ways in which lizards can exhibit sexual dimorphism,

Some Interesting facts about the Sand Lizard is that they mate in the early summer to show off their new green patterns to the female lizards. The female lizards lay their eggs in the sand

The eggs are soft shelled while being granular-surfaced, and oval shaped. Female Eastern Indigo Snakes have the ability to retain live sperm for a prolonged period of time, possibly over four years, and they later release the sperm for egg fertilization.