Unit 11 0.0 / 5 ? BiologyVariation and reproductionGCSEAQA Created by: Miss V HarrisCreated on: 11-03-19 22:14 Sexual reproduction The fusion of male and female gametes 1 of 17 Asexual reproduction Involves only one parent with no fusion of gametes 2 of 17 Meiosis Cell division which halves the number of chromosomes, forming gametes 3 of 17 DNA A polymer made up of 2 strands, forming a double-helix, contained in chromosomes 4 of 17 Gene A small section of DNA on a chromosome which codes for a protein 5 of 17 Genome The entire set of genetic material of an organism 6 of 17 Mutation A change in the DNA 7 of 17 Gametes Sex cells, such as egg and sperm cells 8 of 17 Allele Different versions of a gene 9 of 17 Dominant A gene that is expressed in the phenotype when at least one allele is present 10 of 17 Recessive A gene that is expressed in the phenotype if both alleles are present 11 of 17 Heterozygous Alleles present are different 12 of 17 Homozygous Alleles present are the same 13 of 17 Genotype Alleles that are present 14 of 17 Phenotype Physical characteristics/features 15 of 17 Cystic fibrosis A disorder of cell membranes where mucus is thick and sticky 16 of 17 Polydactyly Inherited disorder where the individual has extra digits (fingers or toes) 17 of 17
Comments
No comments have yet been made