Mice can have black fur or brown fur. The allele for black fur (BBB) is dominant to the allele for brown fur (bbb).
A homozygous black-furred mouse mated with a homozygous brown-furred mouse to produce the first generation of offspring.
State the genotypes of: (i) the black-furred parent (ii) the brown-furred parent (iii) the first generation offspring
The first-generation mice mated with each other to produce a second generation. List the possible gametes produced by the first-generation parents, and state the genotypes of the possible second-generation offspring.
The passage below describes part of the process of reproduction in mice. Identify the correct biological terms for the blank spaces (i) to (vi).
"The male mouse produces gametes called (i) ______________ that swim to the female gamete. Each gamete has the haploid number of chromosomes, which is 20 in mice. The gametes join in a process called (ii) ______________. The single cell produced is called a (iii) ______________ and contains the (iv) ______________ number of chromosomes. This cell divides by (v) ______________ into an embryo. Each cell in the embryo contains (vi) ______________ chromosomes."
