Q1. Some dogs have erect ears; others have drooping ears. Some dogs bark while following a scent; others are silent. Erect ears and barking are because of dominant alleles located on different chromosomes. A dog homozygous for both dominant traits is mated to a droopy-eared silent follower. The expected phenotypic […]

Hippogriffs can have black fur or gray fur. However, there is a high rate of mutation from black alleles into gray alleles. In a population of 1000 hippogriffs, if there are 800 alleles for black fur and the forward mutation rate (ie., from black to gray) is 10%, approximately how […]

In the News URL: http://news.sciencemag.org/biology/2015/09/closer-look-nerves-slim-down-your-fat-cells Title: A closer look at the nerves that slim down your fat cells Author: Sarah C. P. Williams Published: September 24, 2015 on Science Magazine.org After reading the article, please answer the following questions. Note that each question is worth three points. To earn full […]

1. Suppose a person has spinal cord damage at the cervical level.  Would this stop the knee-jerk reflex?  How would it affect the plantat (BAbinski) reflex?  Explain. 2. Describe the meaing of intertia, and explain how inertia affects the hair cell processes of the innr ear during accelaration and deceleration. […]