Biology- genetics 0.0 / 5 ? BiologyDNA and inheritanceGCSEAQA Created by: Hannahphilpott41Created on: 23-12-15 14:15 What is an allele? A version gene 1 of 14 What is a nucleus? The control center of the cell that contains genetic material 2 of 14 What is a gene? A section of DNA that gives instructions to a cell on how to make a protein 3 of 14 What is a chromosome? Long, thin structures in the nucleus of a cell that are made from molecules of DNA. They carry genes 4 of 14 What is DNA? A chemical that makes up chromosomes and carries the genetic code which controls development 5 of 14 How many chromosomes do human's have? 46 chromosomes (23 pairs) 6 of 14 What does recessive mean? An allele that needs two copies to be expressed 7 of 14 What is a carrier? Somebody that carries the gene but doesn't express it 8 of 14 Does Mitosis form unidentical cells? No, it form identical cells? 9 of 14 How many daughter cells does Meiosis have? 4 10 of 14 How many daughter cells do Mitosis have? 2 11 of 14 How many chromosomes do daughter cells of Meiosis have? 23 12 of 14 What are 3 ethical objections to embryo screenings? It can damage or kill embryos, embryos cannot consent, murder, encourages abortions of disabled children 13 of 14 What are 3 reasons for embryo screenings? It can prevent the birth of disabled children, the embryos can be used in stem cell treatment, allows parents to prepare for child 14 of 14
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