A short section of DNA that codes for a protein

What are the products of mitosis?

Two genetically identical cells with the full chromosome number

Why must gametes have half the normal chromosome number?

So fertilisation restores the full number rather than doubling it

It shuffles genes so each gamete is genetically different

The alleles it has for a characteristic

Two different alleles for a characteristic

Someone heterozygous who does not have the disorder but can pass the allele on

15questions. Pick an answer and you'll see why right away.

What is a gene?
In DNA, which bases pair together?
How many chromosomes are in a normal human body cell?
Which molecule carries the genetic code from the nucleus to a ribosome?
How many bases code for one amino acid in protein synthesis?
What are the products of mitosis?
Why must gametes have half the normal chromosome number?
Why does meiosis lead to variation?
What does the genotype of an organism describe?
What does heterozygous mean?
Crossing two heterozygous tall pea plants (Tt x Tt, T dominant) gives what phenotype ratio?
What are the sex chromosomes of a human female?
Whose gamete determines the sex of a baby?
What is a carrier of a recessive genetic disorder?
Two carriers (Ff) of cystic fibrosis have a child. What is the chance the child has the disorder?