Biology Final 14

Which sex is more likely have a recessive, x-linked trait?

Male

A male child with wavy hair is born to a mother with curly hair and a father with straight hair.​ Which type of inheritance best explains the child's hair type?

incomplete dominance because the child's hair type is a blend of the parental hair types

The diagram shows a disorder of chromosome 15.​​ ​Which of the following identifies the type of chromosomal mutation that has occurred?

inversion

Order the steps to cloning an animal with the first step being on the top.

1. Remove an egg cell, from the ovary of a female. 2. Remove the nucleus from the egg cell. 3. Insect the nucleus of an adult cell you would like to clone into the egg cell. 4. Implant egg cell back into a female womb. 5. Female gives birth to a genetic clone of donor cell.

In Labrador retriever dogs, the black coat color allele (B) is dominant over the chocolate coat color allele (b). However. some litters produce dogs that have a yellow coat color. Scientists have determined this is because of a second gene that can influence coat color. If this eumelanin gene is recessive for both alleles (e), the dog's coat will be yellow regardless of the alleles for the other coat color Rene. A dog breeder sets up a cross between a dog that is homozygous dominant for coat color (BB) and heterozygous for eumelanin (Ee) with a dog that is homozygous recessive for coat color (bb) and heterozygous for eumelanin (Ee).​ Place the dogs in the Punnett square to show the coat color phenotypes that would result from this cross.​ You may use each dog more than once. You should fill all the blank boxes in the Punnett square.

BExbE=black BexbE=black BExbE=black BexbE=black BExbe=black Bexbe=yellow BExbe=black Bexbe=yellow BExbE=black BexbE=black BExbE=black BexbE=black BExbe=black Bexbe=yellow BExbe=black Bexbe=yellow

Students model codominance in fish. B is the allele for blue coloring, and R is the allele for red coloring. They draw three fish with different-colored scales and fins. Their drawings are shown in the table.​​ Select the boxes to show the genotypes for each fish shown.

Blue=BB Red=RR Blue and Red=BR

CRISPR-Cas9 is a genetic modification technique that edits parts of the genome of an organism. Using this technique scientists can add, remove, or modify sections of the DNA sequence.​​How can scientists use this technique to control gene expression?

By activating or deactivating specific genes

A heterozygous green pea plant is mixed with a homozygous yellow pea plant. Complete the Punnett Square. ggxGg

gXG=Gg gXG=Gg gXg=gg gXg=gg

Cloning results in two organisms that are

genetically identical

Base your answer to the question on the information and data table below and on your knowledge of biology.Illinois Greater Prairie Chicken on the RiseAs pioneers moved west in the mid-1800s, the greater prairie chicken population in Illinois was estimated to number in the millions. Since then, their population has drastically declined.Evidence of the rapidly declining population was obtained from studying the number of eggs that hatched over several years. In Jasper County, Illinois, the number of prairie chickens fell from 2,000 to less than 50 in under 35 years. Researchers compared the DNA from feather samples from the living Illinois chickens to the DNA from feather samples dating from the year 1930 found in a museum. It was found that the living Illinois chicken population had a very low level of genetic diversity.In 1992, researchers attempted to increase genetic variation by transporting more than 500 healthy prairie chickens into Illinois from the states of Minnesota, Kansas, and Nebraska. The data table below shows the changes in the percent of eggs that hatched from samples taken in different years. Researchers documented that this increase in the percent of eggs that hatched was not influenced by environmental events.​ The scientists transported prairie chickens from three different states into the state of Illinois in order to

increase genetic diversity