Some genetic disorders can have what, as opposed to a mutation of the chromosome?

Some genetic disorders can have what, as opposed to a mutation of the chromosome?

Answer: wrong number of chromosomes, Downs Syndrome has 3 copies of chromosome 21, Turner syndrome is only having 1 x chromosome - only female and reproductive organs don't mature

Why are most genetic disorders passed down as recessive alleles? Is there an exception to this?

Why are most genetic disorders passed down as recessive alleles? Is there an exception to this?

Answer: because dominant alleles would always show and wouldn't allow the recipient to live long enough to reproduce; yes, Huntington's Disease

__________ is 2 genes both showing with each other present. An example is the AB blood type.

__________ is 2 genes both showing with each other present. An example is the AB blood type.

Answer: co-dominance, A and B blood type are both dominant, so both show up

This type of dominance shows both traits and the resulting phenotype is a mixture of the alleles :

This type of dominance shows both traits and the resulting phenotype is a mixture of the alleles :

Answer: incomplete dominance

People with recessive genes can be called _____________ especially when dealing with genetic disorders.

People with recessive genes can be called _____________ especially when dealing with genetic disorders.

Answer: carriers

Alleles sort ______________ from eachother.

Alleles sort ______________ from eachother.

Answer: independently

Crossing second generation plants, Mendel found that:

Crossing second generation plants, Mendel found that:

Answer: recessive alleles return at the ratio of 3:1