The frequencies of the F2 progeny can be determined by applying this rule

9:3:3:1 is the phenotypic ratio produced from this type of cross

True or False: The larger the number of total individual counts in a chi-squared test, the higher the degrees of freedom (df)

The pedigree shown shows three separate rare autosomal conditions in different families. For each pedigree, decide if the condition is better explained as recessive or dominant.

For the cross AAbb x AaBb what are the expected progenies?
What is the expected genotype ratio?
What is the expected phenotype ratio?

A cross between a homozygous yellow line (GG) and a homozygous green line (gg) will result in F1 plants that are heterozygous (Gg) for this trait and produce yellow seeds.
When an F1 plant undergoes meiosis what gamete will produce and in what proportion

A pea plant is heterozygous for two genes; one controlling height, one controlling color. The genotype is written PpTt. Based on the law of independent assortment, approximately what proportion of the pollen produced by this plant should have the genoty

Define chi-squared

In the pedigree shown could this trait be inherited as a simple:
a) autosomal recessive?
b) autosomal dominant?
c) X-linked recessive?
d) X-linked dominant?
e) Y-linked trait?

The study of genes

According to Mendels law of segregation this always receives only one of the parents alleles for each gene

What is Mendels law of Independent Assortment?

T/F:If the chi-squared value is below 5% then the sampling is not due to random chance and the hypothesis is therefore rejected.

In the pedigree shown could this trait be inherited as a simple:
a) autosomal recessive?
b) autosomal dominant?
c) X-linked recessive?
d) X-linked dominant?
e) Y-linked trait?

DNA is made up of nitrogenous bases, phosphates and a ribose sugar molecule, name the 4 nitrogenous bases

Below you will find listed the gamete possibilities for a heterozygous parental strain, state which are correct and which are incorrect:
a) 3/4G 1/4g
b)1/2G 1/2g
c)1/2GG 1/2gg
d)1/2Gg 1/2Gg
e)3/4g 1/2G
f) 1/2g 1/2g

In humans achondroplastic dwarfism and neurofibromatosis are both extremely rare dominant conditions. If a woman with achondroplasia marries a man with neurofibromatosis, what phenoypes could be produced in their children and in what proportions? be sure

Bonus!

In human hair, the black and brown colors are produced by various amounts and combinations of chemicals called melanins. However, red hair is produced by a different type of chemical substance about which little is known. Red hair runs in families, and

What is the difference between genotype and phenotype?

What is the probability that an F2 seed chosen at random will be yellow?
What is the probability that an F2 seed chosen at random from among the yellow seeds will breed true when selfed?
What is the probability that three F2 seeds chosen at random will in

Consider three yellow, round peas labelled A, B, and C.
Each was grown into a plant and crossed to a plant grown from a green wrinkled pea.
Exactly 100 peas issuing from each cross were sorted into phenoypic classes as follows:
A: 51 yellow, round
49

In mice, individuals with either the BB or Bb genotype have black fur, while those with the bb genotype have brown fur. You cross true-breeding black and brown mice to produce heterozygotes, then cross these to produce an F2 generation with five mouse pup

John and Martha are contemplating having children, but John's brother has galactosemia (an autosomal recessive disease) and Martha's great-grandmother also had galactosemia. Martha has a sister who has three children, none of whom has galactosemia. Draw

I solved the X-ray crystallography structure of DNA