Which of the following are requirements for evolution by natural selection? I environmental change II differential survival and reproduction III heritability of phenotypic variation IV variation in phenotype V sexual reproduction Question options: II, III, IV III, IV, V II, IV, V I, II, IV II, III, V

Which of the following are requirements for evolution by natural selection? I environmental change II differential survival and reproduction III heritability of phenotypic variation IV variation in phenotype V sexual reproduction Question options: II, III, IV III, IV, V II, IV, V I, II, IV II, III, V

Biology: The Unity and Diversity of Life (MindTap Course List)

14th Edition

ISBN:9781305073951

Author:Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr

Publisher:Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr

Chapter12: Meiosis And Sexual Reproduction

Section: Chapter Questions

Problem 3CT: Different populations of the tiny freshwater snails pictured in FIGURE 12.1 reproduce sexually, or...

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Natural Selection is defined as the differential survival and reproduction of individuals due to differences in phenotype. What two features of a population are required for Natural Selection to function? Binary fission Asexual reproduction Genetic variation Overproduction of progeny Homeostasis Interbreeding of progeny Recombination O Co-dominant phenotypes
180- 170- Figure 1. For each of more than 200 human societies, the average height of the men is plotted against the average height of the women. The diagonal line shows where the points would fall if men and women were of equal height. From Rogers and Mukherjee (1992). 160- 150- 140- 140 150 160 170 180 Female stature (cm) tionry ysin.e 2. Using an evolutionary approach, explain the evolution of sexual dimorphism in height among men and women, Is this difference due to natural or sexual selection? How do know? you Male stature (cm)
No two people are genetically identical, except for identical twins. What is the main source of genetic variation among humans? Group of answer choices the reshuffling of alleles in sexual reproduction genetic drift new mutations that occurred in the preceding generation environmental effects
180- 170- Figure 1. For each of more than 200 human societies, the average height of the men is plotted against the average height of the women. The diagonal line shows where the points would fall if men and women were of equal height. From Rogers and Mukherjee (1992). 160- 150- 140- 140 150 160 170 180 Female stature (cm) tionry ysin.e 1. Briefly explain how the figure shows that human men and women are sexually dimorphic in height. Male stature (cm)
In birds, where the female typically handpicks the male to reproduce with, there are clear differences in appearance between the genders. That difference in appearance is called Gender Binarism Runaway Selection Sexual Dimorphism Divergent Evolution
QUESTION 3 Which mechanism produces variation for evolution by shuffling existing alleles? O rapid reproduction sexual reproduction mutation O changes in chromosome numbers
Organism 1 has the genotype AaBbCc and Organism 2 has the genotype AABBCc. Select the statement which is FALSE Question 5 options: Organism 1 is a heterozygote Organism 1 and 2 can both pass on the dominant allele "C" Organism 1 and 2 have the same number of gametotypes possible Organism 2 can never have offspring homozygous for the recessive "a" allele
Natural Selection requires variation in order to choose the fittest for survival. From the list below, choose 3 sources of variation that Natural Selection exploits. Recombination of chromosomes Mutation Homozygous chromosomes Random assortment of chromosomes O Hybrid vigor O Incomplete dominance Alternate chromosomal alleles
Is this trait dominant or recessive? I 1 2 2 2 3 4 II IV 1 1 2 3 dominant recessive 3 5 4 5 4 5 6 6 7 8 9 6 7 7 8 10 11 12 8 9
QUESTION 3 Darwin's theory of natural selection explains: O The way life began. O The way evolution works at the genetic level. The way dinosaurs became extinct. O That traits within a breeding population that are adaptive to specific environmental circumstances become more numerous in that population over time.
The bination of genes during reproduction in an important step in the evolutionary process What effect does the recombination of genetic material have on a population of organioms? O Recombination increasses the ability of all offspring to survive in a stable environment O Recombinalion decreases the genetic variation of a population which helps maintain a stable population O Recombination decreases the chance of producing offspring that are able to adapt to the new environment. O Racombination increases the genetic variation of the population that enables a species to adapt to change.
One of the key ingredients of evolution by natural selection is variation. Within a population, evolution by natural selection will occur if there is a selective advantage of one variation over another. What are the sources of variation in living populations? Select all that apply. a random mutations to DNA when DNA replicates in reproductive cells b environmental factors that may mutate DNA in gametes c mutations in somatic cells d crossing over during meiosis