Question

The bighorn sheep (Ovis canadensis) is a species of sheep native to North America named for its large horns. These horns can weigh up to 14 kg (30 lb), while the sheep themselves weigh up to 140 kg (300 lb). The sheep live in harems, groups of one male and multiple females. Populations of bighorn sheep have inhabited Alberta, Canada for thousands of years. In bighorn sheep, males fight each other by banging their large horns together and males that win these contests control harems of females. Horn size in males is primarily influenced by a gene called HRN. There are 2 alleles, H1 and H2. H1 produces larger horns and H2 produces small horns. The alleles show an incomplete dominance inheritance pattern. Scientists measured horn size of male sheep in a population of bighorn sheep in 1950. Below is a frequency graph that shows the horn size data collected by the scientists. What is the best way to fill in the x-axis label and values denoted by 3) and 4) in the graph?

Below is a frequency graph that shows the horn size data collected by the scientists. What is the best way to fill in the x-axis label and values denoted by 3) and 4) in the graph? O3) Time 4) Pre-1950 1950 Post-1950 3) Genotype 3) Horn Size 3) Frequency 4) H1H1 H1H2 H2H2 4) Small Medium Large 4) Low Medium High

Answer 1

Answer :

To plot a graph of hornsize and proportion of such individuals (frequency), we can denote horn size on the x-axis and frequencies on y-axis.

The size of horn (x-axis) can be small, medium or large.

The frequency of a particular horn size can be low, medium or high.

Thus, correct choice should be:

3) FREQUENCY, 4) LOW MEDIUM HIGH

3) Time 4) Pre-1950 1950 Post-1950 3) Genotype 4) H1H1 H1H2 H2H2 3) Horn Size 4) Small Medium Large 3) Frequency 4) Low Medium High

The graph can be shown as :

highl medium Frequency low 12 Horn size