True or false - in humans, chromosomes are usually found in groups of four?
False - they come in pairs.
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What are alleles?
Alleles are different versions of the same gene.
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How do genes control the different characteristics we develop?
Each gene is a code for making a certain protein. Proteins are building blocks of cells. Having different versions of proteins means that we end up with different characteristics.
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What do the words 'genotype' and 'phenotype' mean?
GENOTYPE - is the genetic makeup of a cell, organism or an individual usually with reference to a specific characteristic under consideration. PHENOTYPE - Means the physical appearance of an organism as distinguished from its genetic makeup.
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Is a persons weight determined by genes, the environment or a combination of both?
A combination of both.
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Name the two types of sex cell.
Egg and Sperm.
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How many chromosomes are found in sex cells?
46 - 23 from each parent.
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Why do most children look a bit like both of their parents but not identical?
A child is only given one chromosome from each parent so they only inherit some of their parents genes but not all.
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What is the difference between homozygous and heterozygous?
HOMOZYGOUS - Means to carry two genes that are the same.
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Other cards in this set
Card 2
Front
True or false - in humans, chromosomes are usually found in groups of four?
Back
False - they come in pairs.
Card 3
Front
What are alleles?
Back
Card 4
Front
How do genes control the different characteristics we develop?
Back
Card 5
Front
What do the words 'genotype' and 'phenotype' mean?
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