Genetics and Meiosis

The statement "In Meiosis, the way in which a chromosome pair separates does not affect the way others separate" is another way of expressing Mendel's law of

• dominance
• independent assortment
• first filial generations
• punnett squares

Cells containing two alleles for each trait are described as

• haploid
• diploid
• gametes
• homozygous

The gamete that contains genes contributed only by the mother is

• the sperm
• an egg
• a zygote
• dominant

A couple has two children, both of whom are boys.  What is the chance that the parents' next child will be a boy?

• 0%
• 50%
• 25%
• 75%

When an area of a chromatid is exchanged with the matching area on a chromatid of its homologous chromosome, ___ occurs.

• crossing over
• mutagenesis
• hybridization
• fertilization

Which of the following describes an organism that has the genotype Bb

• homozygous
• heterozygous
• inbred
• all of these

The law of independent assortment states that the inheritance of alleles for one trait is not affected by the inheritance of alleles for a different trait if the genes for the traits are on

• separate chromosomes
• homologous chromosomes
• the same chromosome
• homozygous chromosomes

Which of the following is a phenotype?

• BB
• Bb
• bb
• Blue eyes

What is a phenotype

• The genetic make up (code)
• The physical trait

having two of the same genes for the trait (sometimes called purebred).

• homozygous
• heterozygous
• protein
• chromosome