What are chromosomes called that contain the same genes but may carry different alleles?

Two individuals with dominant phenotypes were crossed. Their offspring showed a phenotypic ratio of 3:1 in both sexes (three parts dominant phenotype and one part recessive phenotype). What are the genotypes of the parents?

Reciprocal crosses are used to determine:

Phenylketonuria (PKU) is an example of ______.

One map unit (mu) of genetic distance is equal to:

Assume that a maternal-effect gene has two alleles: the dominant allele (A) produces the wild-type (WT) phenotype, while the recessive allele (a) produces the mutant phenotype. A mother with a mutant phenotype has an offspring with a WT phenotype. Determine the mother's genotype.

In a dihybrid cross, two heterozygous individuals were crossed. If the inheritance of the genes follows Mendel’s laws, what will be the phenotypic ratio of the offspring?

How many Barr bodies does an individual with the karyotype 48, XXXY have?

For each statement, indicate whether it is true (T) or false (F).

Three genes, A, B, and C, are located on different chromosomes. List all possible types of gametes produced by an individual with the genotype Aa BB Cc.