A streaming service wants to conduct a survey about its original shows and movie offerings. The company’s researchers divide subscribers into groups based on age: 18–24, 25–34, 35–44, 45–54, and 55 and older. They then select a random sample from each age group. The streaming service is using a ____.

List two functions of the circulatory (cardiovascular) system. 

Define negative feedback. Describe one example of negative feedback. Be specific to demonstrate an example. 

Although there are many genes that modify the expression of eye colour in humans, in general, dark eye colour is dominant to blue eye colour. Freckles are also dominant to no freckles. These genes are located on different chromosomes. If one parent is blue-eyed with no freckles and the other is heterozygous for dark eye colour and freckles, which ratio of phenotypes may be seen in the offspring? 

The specific sequence of which DNA component is responsible for carrying the genetic instructions for an organism?

A gene exists in two different forms (B and b). With respect to the allele present, which type of gamete can a homozygous recessive individual produce?

In a species of rabbit, fur colour is controlled by a single gene with multiple alleles:  black fur is dominant white fur is dominant  both black and white are dominant over albino fur  Answer the following questions. Using the 3 specific phenotypes above explain the principle of Codominance. Include the definitions and specific examples for codominance, heterozygous and homozygous genotypes. (4 marks) Is it possible for a heterozygous black male rabbit and a heterozygous white female rabbit to have an albino offspring? Explain why or why not, making sure to include the genotype of the parents that would be required for this to be possible. (2 mark)

Mendel’s Law of Independent Assortment is best demonstrated by which of the following scenarios?

A trait is considered moderately repeatable if it’s repeatability is greater than 0.4, such as egg weight.

If ranch A has a standard deviation of 65 lbs and ranch B’s is 45 lbs for yearling weight, which ranch would you think will get a better price for their calf crop?