Question

Chapter 9: Patterns of Inheritance (Genetics) Gene - Hereditary = Genetics = Character Trait = Gregor Mendel's Experiments: • Mendel used pea plants that had distinct traits • Mendel began his experiments using pea pure-bred plants - What are the two possible genotypes for pure bred plants? and Mendel was able to perform cross-fertilization between two different plants (known as a genetic cross). the resulting offspring were Purebred parents generation, Offspring of the P generation generation, Offspring of the Fi generation = generation (etc.) • Mendel's 4 Hypotheses: 1. There are alternative versions of genes that account for variations in inherited characters • The alternative versions of genes are called 2. For each inherited character, an organism inherits two alleles, one from each porent. • • An organism that has 2 identical alleles for a gene = An organism that has 2 different alleles for a gene = for that gene. (RR or r) for that gene. (R) 3. If an organism has two different alleles for a gene, one allele determines the organism's appearance and is called the allele; the other allele hos no noticeable effect on the organism's appearance and is called the allele. • Geneticists use uppercase italic letters (such as P) to represent dominant alleles and lowercase italic letters (such as p) to represent recessive alleles. 4. A sperm or egg carries only one allele for each inherited character because the two alleles for a character segregate (separote) from each other during the production of gametes. This statement is called the When sperm and egg unite at fertilization, each contributes its alleles, restoring the paired condition in the offspring

Answer 1

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Gregor Mendels Experiments : Mendel used pea plants that had Seven dichnct raik expertment using pea Mendel began his bred plant A pure pure -bred plants relers to otspoings resulting fom a bue breeding what are the possible gendty pes fos pure bred plants? PP PP ie Pure bred Punple pure bred ohute

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An organismthat hau for 2 dierent alleles helerozygous for thal CI qene gere 3. f an organišm hcu 2 duferent allele for a gen, one allele determimus the crgansn appearance & is called the dominant allelthe other allela han no noticabl elech on the onganism appearanu & 1s called the recessi allele A Sperm or egg carries only one allele 4. for each inherited eharacter because he two alleter for a charadter segregale fo each other duning me praduction dgametas. called Law This statument is Segregatio when spermegg unilzi at fertilization, each conbibutes alleles, reatoving the paredd conduton the oping its