Transcript Genetics 1
Leaving Certificate Biology Genetics & Inheritance 1 iQuiz FIRST In PowerPoint 2007 if you see a Security Warning click HERE on Options… and then click on Enable this content SECOND Press the F5 Key to Begin, Then click on this Blue Box Who is regarded as the father of genetics? Punnett Mendel Harvey Fleming Alternative forms of a gene are known as … Autosomes Alleles Junk genes Heterosomes The diploid number of chromosomes is restored as a result of … Mitosis Meiosis Gamete formation Fertilisation Which of the following refers to the formation of an intermediate phenotype from the heterozygous condition? Incomplete dominance Linkage Independent assortment Segregation Alleles are not found in pairs in … Fertilised eggs Muscle cells Nerve cells Sperm cells The physical appearance of an individual as a result of the interaction of the genotype with the environment is called the … Gene expression Phenotype Genotype Gene pharming Which of the following are possible gametes from TTRr? TR, Tr TT, Rr TT, TR TT, Tr A person with blood type A may receive a transfusion of which type(s) of blood? A & AB A&O AB & O AB Which of the following is a cross which results in 75% of the progeny having the dominant phenotype? TT x tt Tt x tt Tt x Tt TT x Tt The process of changing the information in a gene into a protein and the effect that protein has on the organism is called … Gene pharming Genotype Gene expression Phenotype Two heterozygous tall plants, each with a recessive gene for dwarfism, are crossed. What proportion of their offspring will be dwarf? 1 in 2 1 in 4 1 in 3 1 in 8 A normal man marries a woman who is a carrier of the recessive haemophilia gene, which is sex-linked. What proportion of their offspring could have the condition? 1 in 2 1 in 4 1 in 6 1 in 8 What term is given to pieces of DNA that do not code for a protein and seem to have no function other than to separate genes? They are also known as junk genes. Interons Genotype Exons Phenotype A colour-blind man marries a woman with normal vision, whose father was colour blind. What are the chances that a son of theirs will be colour-blind? 75% 100% 25% 50% What ratio would you expect in a dihybrid cross between a parent heterozygous for both traits and a parent homozygous recessive for both traits (Independent assortment occurs). 9:3:3:1 1:1:1:1 1:1 3:1 Genetics & Inheritance 1 iQuiz How did you do? Click this Blue Box to find out