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Question1.
The agave bush and the desert tortoise are both found in the Sonora Desert in the Southwest of North America. Known as the century plant, the agave blooms in June to August but only once after about 25 years and then dies. In contrast, tortoises may live in excess of 100 years and when they reach the age of around 15 years they lay eggs between May and July at 2-3 year intervals. What type of reproductive strategy is demonstrated by each of these species?
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- QUESTION 27 Identify the most accurate statement: a. Sexual reproduction is often costly due to the need to find a mate. b. Sexual reproduction results in more offspring per mother. c. Asexual reproduction is always bad for a species. d. Aexual reproduction is associated with an increase in heterozygosity.QUESTION 39 Why does sexual selection typically act more strongly on males than females? a. Males typically participate in more parental care than females b. Females invest substantially more energy than males in gametes c. Females are likely to combat each other for mates d. Male limitations to reproductive success is gamete productionQUESTION 39 Which of the following is a benefit of sexual reproduction? A. Offspring are genetically identical to the parents. B. Offspring differ genetically from themselves and from their parents. C. There is a possibility of mutations that lead to disease. D. All of the above.
- QUESTION 36 Which of the following occurs during meiosis in eukaryotic spermatogonia? A. One diploid cell becomes two diploid somatic cells. B. One haploid cell becomes two haploid somatic cells. C. One haploid cell becomes one diploid gamete. D. One diploid gamete becomes two haploid gametes. E. One diploid cell becomes four haploid gametes.Help. QUESTION 12 Which of the following can be considered a threat display? a. A dog raising the hair on its back. b. Pupil dilation in birds. c. Yawning in primates. d. All of the above. QUESTION 13 Which animal participates in parthenogenetic reproduction? a. Asian honey bee b. Whiptail lizard c. Side-blotched lizard d. Spotted hyenaQuestion: Another mutation has occurred in the Andean condor, which is further endangering the survival of the species: Frizzled feathers. This trait results from a mutation in the a-keratin gene, and this mutation causes the feathers to curl. If two frizzled condors happen to mate, rather than producing offspring with frizzled feathers, one observes that 25% of the condor chicks have normal (straight) feathers; 50% have frizzled (curly) feathers, and an unfortunate 25% have “over-frizzled” feathers, which are extremely brittle and resemble pipe cleaners. Birds having this “over-frizzle” trait have great difficulty flying. When a condor that is homozygous for the normal feather allele is mated with one of these “over-frizzled” birds, all of the chicks will have frizzled feathers. Please NAME and EXPLAIN the genetic phenomenon described here.
- Question:- Assume that the probability that any child born in the population will be a boy is 0.51 and the probability that it will be a girl is 0.49. If a family has six children, what is the probability they will have 3 boys and 3 girls?Question 38 If human gametes were diploid the products of fertilization would have more chromosomes than their parents. the products of fertilization would have fewer chromosomes than their parents. the products of fertilization would have the same number of chromosomes as their parents. the embryo would be diploid. fertilization could not occur. Question 39 Place these cells in order of occurrence for the stages of mitosis. Question 40 List 3 differences between DNA and RNA Question 41 What was the main outcome of Griffith's experiments? Question 42 Which of the following is TRUE about this cell shown below? chromosomes are replicated sister chromatids are separated crossing over has occurred cytokinesis is occurring Question 43 The process of translation occurs in the and the outcome is . Question 44 Which of the following is INCORRECTLY paired? helicase -- unwinds the double helix DNA polymerase -- joins nucleotides to form new DNA strands ligase -- adds new…Question 20 Which of the following is a homologous pair? two chromosomes with the same alleles in the same sequence two chromosomes with identical alleles two chromosomes with the same alleles and different genes two chromosomes with the same sequence of genes Question 21 In plants, ____ are produced by meiosis. flowers spores Gametophytes sporophytes Question 22 List the following in order from smallest to largest. nucleosome, histone, chromosome, nucleotide Question 23 What is the best reason for concluding that this cell is in anaphase II? crossing over has occurred sister chromatids are separating homologous pairs of chromosomes are present each new cell has two chromosomes Question 24 Which of the following is part of the interphase of the cell cycle? S phase mitosis cytokinesis both mitosis and cytokinesis Question 25 tRNA molecule is “bilingual” because it binds to: Question 26 What is the end result of a DNA strand with the sequence ATTCGA transcribed and translated?…
- Multiple question 1.) Which of the following statements is true about mitosis and meiosis? A.) Mitosis results in formation of two daughter cells , and occurs in germ cells; whereas, meiosis results in formation of four daughter cells, and occurs in the liver. B.) Mitosis results in formation of four daughter cells, and occurs in somatic cells; whereas , meiosis results in formation of two daughter cells, divisions and occurs in germ cells C.) Mitosis results in formation of four daughter cells, and occurs in germ cellswhereas, meiosis results in daughter cells, and occurs in liver cells D.) Mitosis results in formation of two daughter cells, and occurs in somatic cellswhereas , meiosis results in formation of four daughter cellsand in germ cells. 2.) Which of the following plant parts is usually used for studying mitotic cell division A.) stem tip B.) root tip C.) bud D.) flower 3.) The cell cycle proceeds at an uncontrolled rate among cancer cells. Which of the following…Question 2. A widow's peak hairline is a dominant trait and a straight hairline is a recessive trait. What will be the genotypes and phenotypes of children of a homozygous dominant parent and a heterozygous parent? a) Construct a Punnett Square - List gametes in the area with the dashed line and the genotypes of the offspring in the area with the sold line. b) Genotypes of Children-c) Phenotypes of children-Please answer fast Sexual reproduction is a way to create genetic variation in the offspring.a. Describe in which circumstances this is desired.b. Describe the three different processes in a sexual life cycle that create genetic variation.For each process, describe in detail during which part or phase the sexual life cycle ittakes place.c. Consider this diploid animal cell in G1 phase. What is the haploid and the diploid number of this cell?
