Exam 10: Foundations of Genetics

What is the evolutionary significance of mutation?

Two true-breeding pea plants are crossed,one with purple flowers and the other with white.Their offspring are

White flower color is recessive to purple.What is the genotypic ratio when two heterozygous pea plants are crossed?

Mendel's "factors" for inheritance are now known to be ________.

When homologous chromosomes or chromatids fail to separate properly in meiosis,this is called _________________.

Mendel's law that states only one allele specifying an alternative trait can be carried in a particular gamete is called the _________________________________.

What is the possible advantage of being heterozygous for the sickle-cell gene?

Genes for sex-linked traits tend to be carried on what chromosomes?

What is the probability of getting a pea plant with recessive green seed color when two heterozygous pea plants,both having the dominant yellow-seeded phenotype,are crossed with each other?