Pattern of Inheritance

What is autosomal recessive Alleles

• Autosomal recessive alleles are gene variants that require two copies to express a trait.
• Autosomal recessive alleles are found only on the X chromosome.
• Autosomal recessive alleles are always harmful and cause diseases.
• Autosomal recessive alleles are dominant and can be expressed with a single copy.

Describe Mendelian Inheritance.

• Mendelian inheritance only applies to plants and not animals.
• Traits are inherited only through environmental factors, not genetics.
• All traits are inherited in a 50/50 ratio regardless of dominance or recessiveness.
• Mendelian inheritance describes how traits are passed from parents to offspring through dominant and recessive alleles, following specific patterns of segregation and independent assortment.

What is Autosomal Dominant?

• A genetic condition that is always recessive.
• A pattern of inheritance where one mutated gene is sufficient to cause a trait or disorder.
• A type of inheritance that only affects males.
• A pattern of inheritance where two mutated genes are required to cause a trait or disorder.

Describe what is Autosomal Chromosome?

• Autosomal chromosomes are the only chromosomes that do not carry genetic information.
• Autosomal chromosomes are the 22 pairs of non-sex chromosomes in humans that carry genetic information.
• Autosomal chromosomes are responsible for determining an individual's gender.
• Autosomal chromosomes are the 23 pairs of sex chromosomes in humans.

What is sex chromosomes?

• Chromosomes that carry genetic information for traits
• Chromosomes that are identical in both sexes
• Chromosomes that determine the color of an organism's eyes
• Sex chromosomes are chromosomes that determine the sex of an organism, such as X and Y in humans.

What will be the possible offsprings of Autosomal recessive, Ff cross to Ff?

• 1 FF, 2 Ff, 1 ff
• 1 FF, 3 Ff
• 3 Ff, 1 ff
• 2 FF, 1 Ff, 1 ff

What will be the possible outcome if the father is affected and the mother is unaffected in autosomal dominant condition?

• 100% chance of being affected
• 50% chance of being affected, 50% chance of being unaffected.
• 75% chance of being affected
• 25% chance of being unaffected