Researchers studying rock pocket mice across a 35 kilometer transect in the Arizona Sonoran Desert trapped a total of 225 mice and recorded substrate color and coat-color frequencies for each location. Each site was separated from any of the others by at least eight kilometers. Their data are summarized below.

Collecting site Substrate color Number light phenotype Dark phenotype
1 Light 6 6 6
2 light 85 80 5
3 Dark 7 0 7
4 Dark 5 0 5
5 Dark 45 3 42
6 Light 77 34 43

Calculate the overall frequencies of dark-colored mice and light-colored mice caught on dark-colored substrates.

Genotypic frequency of Dd = 0.00624

Explanation:

Frequency = no. of mice of one color / total no. of mice

                                                                                           = 0.013 (d)

                                                                                           = 54/225

                                                                                            = 0.24 (D)

These are allele frequencies.

Genotypic frequency = p²+q²+2pq

where, p= homozygous dominant q= homozygous recessive and pq= heterozygous

Genotypic frequency of dd = q²

                                              = (0.013)²

                                              = 0.000169

Genotypic frequency of DD =  p²

                                              = (0.24)²

                                              = 0.0576

Genotypic frequency of Dd = 2pq

                                              = 2 × 0.24  × 0.013

                                              = 0.00624

1: the largest region of the brain is the:

  cerebrum

2. the term "psychology" literally means:

the process or procedure of the science or study of the mind.

3. the area of the brain responsible for respiration, heart rate, and smooth muscle control of our blood vessels is t

medulla oblongata

4. the structure that conducts nerve impulses to and from the brain and serves as a reflex center for some sensory information without input from the brain is the:

spinal cord

5. the three-layered membrane that covers the brain and spinal cord and literally means membrane is called the:

meninges

6. the cord-like (string-like) structures that carry bio-electrical impulses from one part of the body to another are called

nerves

7. a group of nerve cell bodies that are found outside of the spinal cord and brain are referred to as:

ganglions or ganglia (pl.) “literal meaning knot”

8. the term that means spinal cord inflammation is:

myel/itis

individual oxygen atoms are formed during photosynthesis.-c.