What is an allele?

It shows a family tree. The genotypes of the grandparents regarding a recessive genetic mutation (a) that causes a genetic disorder are given. I can't draw it, so I'll describe it. The first grandma is AA and grandpa is Aa. They gave birth to the father. The second grandma is Aa and the grandpa is Aa too. They gave birthe to the mother. The mother and father then gave birth to the child... QUESTION: What percent chance does the child have of inheriting the disorder? Of being a carrier? Of not carrying the mutation at all? Show your work. QUESTION 2: You discover that those with the disorder rarely live beyond 5 years. How does this change the percentages? Show your work. It's one of the homework questions for test revision and I can't do it!

How does DNA control the synthesis of proteins?

explain the mode of inheritance of feather colour in a brown layer

Explain why the mode of inheritance of feather colour means that a farmer will

What is a gene..?

a) Contamination by laboratory workers handling the specimens b) That the ancient DNA might infect the archeologists. c) The degradation of the DNA by chemical damage over time d) The introduction of modern DNA onto the sample by archeologists in the field site.