Flashcards
Simple inheritance in animals and plants
Flashcards do conjunto (15)
- 1How are chromosomes arranged in body cells?In body cells, chromosomes are found in pairs.
- 2What is mitosis?Asexual cell division where two identical cells are formed.
- 3What is cell differentiation and how does it differ in animals and plants?Most types of animal cell differentiate at an early stage of development. Many plant cells can differentiate throughout their life.
- 4What is meiosis?The two-stage process of cell division which reduces the chromosomes number of the daughter cells. It is involved in making the gametes for sexual reproduction.
- 5How does sexual reproduction give rise to variation?Sexual reproduction gives rise to variety because genetic information from two parents is combined.
- 6What is special about stem cells?Embryonic cells and adult cells can be made to differentiate into many different types of cells.
- 7How can we use stem cells to cure people?Stem cells have the potential to treat previously incurable conditions. We may be able to grow nerve cells or whole new organs for people who need them.
- 8What is DNA?Deoxyribonucleic acid, a self-replicating material which is present in nearly all living organisms as the main constituent of chromosomes. It is the carrier of genetic information.
- 9How are specific proteins made in the body?A gene is a small section of DNA that codes for a particular combination of amino acids, which make a specific protein.
- 10How is sex determined in humans?In human body cells the sex chromosomes determine whether you are female (XX) or male (XY).
- 11Can you construct a genetic diagram?Yes
- 12Can you construct a genetic diagram to make predictions about the likelihood of inheriting a genetic disorder?Yes
- 13PolydactylyA genetic condition inherited through a dominant allele which results in extra fingers and toes.
- 14Cystic fibrosisA genetic disease that affects the lungs, digestive and reproductive systems. It is inherited through a recessive allele.
- 15Are there any problems related to embryo screening?There are number of economic, social and ethical issues surrounding the screening of embryos.
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- GCSE Biology Additional Science (AQA) FlashCards sobre Simple inheritance in animals and plants, criado por yusanr98 em 04-04-2014.
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