The typical genotypic ratio of offspring of two heterozygotes for a given trait inheritied in an autosomal recessive manner is 1:2:1.   

Following DNA replication during the S phase of interphase, copies of chromosomes are called chromatids and are joined at ____.   

Match the terms at left to the respective definition (or description). 

A reciprocal cross is a simple method used to discover an unknown genotype if an organism is expressing the dominant phenotype.  

In a monohybrid cross, what is the genotypic ratio of the F2 generation?   

The following recombination frequencies were found. Determine the order of these genes on the chromosome.   A-B = 40 A-C = 8 C-D = 18 C-B = 32 A-D = 26  

If two parents are heterozygous for a genetically inherited dominant disorder, what is the probability their child will also have the disorder?   

SHORT ANSWER QUESTION #6   Using materials from the course, only, what two muscles are involved in adjusting testicular temperature? (1pt)

Mitosis immediately follows the S phase of interphase.   

Spermiogenesis occurs in the seminiferous tubules.