GCSE Science B1 Part 1 Flashcards

Here is the set related to the GCSE Science B1 Part 1 in the form of flashcards. Learn about the GCSE Science B1 Part 1 with the help of the flashcards method.

11 cards   |   Total Attempts: 188
  

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Where are chromosomes found within a cell?
Nucleus.
True or False - In humans, chromosomes areusually found in groups of four?
False - Chromosomes are usually found ingroups of two
What are alleles?
The Different versions of the same gene arecalled alleles
How do genes control the differentcharacteristics we develop?
Each gene is a code for making a certain protein.Proteins are the building blocks of cells. Havingdifferent versions of proteins means that we endup with different characteristics.
What does genotype mean?
The characteristics that an organism displays arecalled it's phenotype.
Name the two types of sex cells?
Sperm - Egg
What does phenotype mean?
The characteristics that an organism displays arecalled it's phenotype.
How many chromosomes are found in sexcells?
23.
Why do children look a bit like both of theirparents but not identical to either?
Half of the child chromosomes come from eachparent.
What is a homozygous?
If you're homozygous for trait, you have twoalleles the same for that particular gene.
What is a heterozygous?
If you're heterozygous for trait, you have twodifferent alleles for that particular gene.