Biology - Genetics Crossword Puzzle

QUESTIONS LIST:

• cysticfibrosis : an inherited disorder of the cell membranes caused by a recessive allele (2)
• allele : an alternative version of a gene.
• chromosome : a long molecule of dna found in the nucleus, which carries genes.
• homozygous : where an organism has two alleles for a particular gene that are the same.
• heterozygous : where an organism has two alleles for a particular gene that are different.
• genotype : what alleles you have, e.g. tt
• phenotype : the characteristics you have, e.g blue eyes.
• dominant : the allele for the characteristic that's shown by an organism if two different alleles are present for that characteristic.
• recessive : an allele whose characteristics only appears in an organism if there are two copies present.
• polydactyly : an inherited disorder caused by a dominant allele that results in a person being born with extra fingers or toes.
• embryonicscreening : genetic analysis of either a cell taken from an embryo before it's implanted into the uterus during ivf, or a sample of cells taken from the placenta, in order to check that the embryo doesn't carry any inherited disorders (2).
• mendel : who's research founded modern genetics.