nurture. D. underestimating children’s contributions to their own development. Information Flag question Information text Chapter 2 Question 5 Not yet answered Marked out of 1 Flag question Question text Heterozygous individuals with just one recessive allele for a given trait Select one: A. cannot pass that trait to their children. B. are carriers of the trait. C. will pass the dominant trait to their children. D. will pass the recessive trait to their children. Question 6 Not yet answered Marked out
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about the inheritance of traits in pea plants. As a result of Mendel’s experiments with pea plants‚ he developed two observations‚ which together comprise Mendelian genetics. The first observation is The Law of Segregation‚ which states that paired alleles separate during the formation of gametes. The second observation
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Data…………………………………………………………………………………………………………………………………….5 Conclusion……………………………………………………………………………………………………………………………………………7 Part A Raw Data The different possible crosses in characteristics with Drosophila in eye colour and wing shape. Table 1: Eye Colour Alleles Parents | Eye Colour | F1 | F2 | | | Wild x Wild | Wild | 1235 | 1160 | | | Brown x Wild | Brown | 0 | 306 | | | | Wild | 1190 | 892 | | | Purple x Wild | Purple | 0 | 325 | | | | Wild | 1208 | 897 | | | Sepia x Wild
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dominant traits that show in the plant‚ and that there are recessive traits that hide behind the dominant. He also found out that if short and tall plants bred‚ they would create a hybrid‚ which has both alleles from each parent. The hybrid could have the dominant trait‚ and also the recessive allele. When Mendel was breeding plants‚ he discovered that when there was a tall and short plant‚ they made four tall plants. But when a hybrid mixed with a hybrid one out of four of the pea plants were short
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Bio Review: Unit 1 Diversity of Living Things Diversity- all the different kinds of life on Earth Species Diversity- variety of species‚ abundance of the species in a given area Genetic Diversity- variation of genes within a species Ecosystem Diversity- diverse range of habitats‚ various organisms within habitats & relationships between them Prokaryotes Eukaryote Appearance Size - Always smaller - 1000x larger DNA structure - Plasmid (one strand circular DNA) - Dna in nucleoid
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Assume that plant weight is determined by a pair of alleles at each of two independently assorting loci (A and a‚ B and b) that are additive in their effects. Further assume that each allele represented by an uppercase letter contributes 4 g to weight and that each allele represented by a lowercase letter contributes 1 g to weight. If a plant with genotype AA BB is crossed with a plant with genotype aa bb‚ what weights are expected in the F1 progeny? A. 1 g B. 4 g C. 8 g ****D. 10 g Phenotypic
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of syphilis soon after syphilis appeared in Europe. a. higherb. lower 10. There are two different ways the water snail‚ Lymnaea peregra‚ can coil: dextral and sinistral. Dextral coiling is caused by the dominant allele (D) and sinistral is caused by the recessive allele (d). Although this is a completely dominant trait‚ the genotypes of all individuals in a population were determined yielding the following data: DD Dd dd Conduct a χ square test to determine if the population is evolving
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Gene Mapping in Ascospore Sordaria Cultures by Recombination Abstract The laboratory experiment demonstrates the process of meiosis using the Sordaria Fimicola fungi. Meiosis is important because it is the process that generates diversity in genetics. A wildtype was crossed with two mutant types: tan and grey. In order to exhibit recombination‚ the sequence of ascospores needed to result in a 2:2:2:2 or 2:4:2 sequence. From the crossover
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known to be dominant to apterous (no wing)‚ while red eyes are dominant to sepia. In additional‚ a sex-linked gene can switch the fruit fly from red eye to white eye. For this paper‚ X+ denotes the dominant red-eye allele on the X chromosome‚ while XW denotes the recessive white-eye allele on the X
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THIS IS A NEW SPECIFICATION H Monday 21 May 2012 – Morning GCSE GATEWAY SCIENCE BIOLOGY B B731/02 Biology modules B1‚ B2‚ B3 (Higher Tier) * 1 0 2 5 9 6 6 0 1 1 * Candidates answer on the Question Paper. A calculator may be used for this paper. Duration: 1 hour 15 minutes OCR supplied materials: None Other materials required: • Pencil • Ruler (cm/mm) * B 7 3 1 0 2 * MODIFIED LANGUAGE INSTRUCTIONS TO CANDIDATES • • • • • • Write your name‚ centre number and candidate number in the boxes
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