5. There are several schools of thought regarding the most appropriate method fo
ID: 178502 • Letter: 5
Question
5. There are several schools of thought regarding the most appropriate method for reconstruction of phylogenies. Identify the approach that emphasizes overall similarities and the reason it is preferred by some systematists.
a. Cladistics, because it reduces subjectivity.
b. Cladistics, because it focuses on shared derived characters.
c. Phenetics, because it rarely mistakes convergent evolution for recent common ancestry.
d. Phenetics, because it reduces subjectivity.
*6. Internal fertilization influences the evolution of parental care strategies because:
a. Externally fertilizing species do not show parental care.
b. The placement of sperm inside the female predisposes the male to care for the resulting offspring.
c. If postzygotic care is necessary for success, the female is in the position of “last custody”.
d. “Advanced” organisms always have internal fertilization.
11. Honeybees and ants posed a special dilemma to Darwin because:
a. They are so small that he could not experiment on them.
b. They show apparently self-sacrificial traits, which conflicts with evolution by natural selection.
c. They show apparently self-sacrificial traits, which conflicts with haplodiploidy.
d. The females are larger and more powerful than the males, which conflicts with sexual selection.
e. They could survive insecticide, and so were not subject to natural selection.
13. If the half-life of carbon-14 is about 5,730 years, then a fossil that has 2.5 grams carbon-
14 and 7.5 grams of its stable decay product should be about how many years old?
a. 22,900
b. 2,800
c. 17,200
d. 11,500
e. 1,400
19. Prezygotic barriers _____.
a. prevent fertilization of gametes from members of closely related species
b. prevent a hybrid zygote from developing into a viable, fertile adult
c. prevent fertilization from occurring between members of the same species with incompatible genes
d. prevent wolves and coyotes from mating
e. only occur in asexual organisms
*25. The hominid species currently suspected as the immediate ancestor of modern humans Homo sapiensis
a. Homo erectus
b. Homo neanderthalensis
c. Australopithecus africans
d. Homo heidelbergensis
e. Australopithecus afarensis
Explanation / Answer
5. There are several schools of thought regarding the most appropriate method for reconstruction of phylogenies. Identify the approach that emphasizes overall similarities and the reason it is preferred by some systematists.
b. Cladistics, because it focuses on shared derived characters.-answer
*6. Internal fertilization influences the evolution of parental care strategies because:
a. Externally fertilizing species do not show parental care.
b. The placement of sperm inside the female predisposes the male to care for the resulting offspring.
c. If postzygotic care is necessary for success, the female is in the position of “last custody”.
d. “Advanced” organisms always have internal fertilization.----------answer
11. Honeybees and ants posed a special dilemma to Darwin because:
a. They are so small that he could not experiment on them.
b. They show apparently self-sacrificial traits, which conflicts with evolution by natural selection.
c. They show apparently self-sacrificial traits, which conflicts with haplodiploidy.
d. The females are larger and more powerful than the males, which conflicts with sexual selection.--------------answer
e. They could survive insecticide, and so were not subject to natural selection.
13. If the half-life of carbon-14 is about 5,730 years, then a fossil that has 2.5 grams carbon- 14 and 7.5 grams of its stable decay product should be about how many years old?
a. 22,900
b. 2,800
c. 17,200
d. 11,500------------answer
e. 1,400
7.5=========3.75-1half
3.75-----2.5
19. Prezygotic barriers _____.
a. prevent fertilization of gametes from members of closely related species-------answer
e. only occur in asexual organisms
*25. The hominid species currently suspected as the immediate ancestor of modern humans Homo sapiensis
a. Homo erectus-----answer
cladistics : it is a way to deal with natural characterization in which creatures are arranged in view of shared inferred attributes that can be followed to a gathering's latest regular progenitor and are not present in more far off precursors. Consequently, individuals from a gathering are accepted to share a typical history and are thought to be firmly related.
=================
Interior treatment is the union of an egg cell with a sperm amid sexual proliferation inside the body of a parent. For this to happen there should be a strategy for the male to bring the sperm into the female's conceptive tract. In well evolved creatures, reptiles, a few fowls, some fish and certain different gatherings of creatures, this is finished by fornication, other intromittent organ being brought into the cloaca. In many fowls, the cloacal kiss is utilized, the two creatures squeezing their cloacas together while exchanging sperm. Lizards, arachnids, a few creepy crawlies and a few molluscs embrace inward preparation by exchanging a spermatophore, a heap of sperm, from the male to the female. Taking after preparation, the fetuses are laid as eggs in oviparous creatures, or in viviparous life forms, keep on developing inside the regenerative tract of the mother to be conceived later as live youthful.
=================
Prezygotic alludes to any phase of the conceptive procedure before the development of the zygote, while postzygotic alludes to any purpose of life after the ovum has been prepared. Both terms are utilized while depicting the preparation and origination forms.
=====================================
Homo erectus is the most, or a standout amongst the most, seemingly perpetual types of Homo, having existed well more than one million years and maybe more than two million years; Homo sapiens has existed for around 200,000 years. On the off chance that considering Homo erectus in its strict sense (that is, as alluding to just the Asian assortment) no agreement has been come to with reference to whether it is familial to H. sapiens or any later hominins
- =================================
Related Questions
drjack9650@gmail.com
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.