Keystone Review Module B-Units 6-7

The genetic material of two different individuals of the same species is analyzed. One individual has brown eyes the other has blue eyes. Which characteristic for eye color would be the same for both individuals?

A specific genetic disorder is caused by nondisjunction. Which statement describes how the genetic disorder occurs?

An inversion occurs along part of a chromosome.

How does the inversion most likely affect the region in which it occurs?

An individual of a plant species shows a certain physical characteristic that require two copies of the same allele to be expressed. based on this information, how would the allele for the characteristic of most likely be classified?

A trait in cows is determined by two alleles of a single gene: allele R is dominant, and allele r is recessive. What is the probability of the dominant trait being expressed in the offspring of one RR parent and one rr parent?

A scientist observes that a certain trait is determined by a single allele. An organism inherited one version of the trait from one parent and another version from the other parent. Both versions of the trait are expressed in the phenotype of the offspring. Which pattern of inheritance best classifies The observed trait?

Blood type is inherited through multiple alleles, including the ‘A’ allele (AA or Ai), the ‘B’ allele(BB or Bi) and the ‘O’ allele(ii). 

A child has type A blood. If the father has type AB blood, what are all the possible phenotypes of the mother? 

Genetic engineering has led to genetically modified plants that resist insect pests and bacterial and fungal infections.

Which outcome would most likely be a reason why some scientists recommend caution in planting genetically modified plants?

A group of students measured a ten-square-meter section of a pond ecosystem and recorded observations.

Which statement is a testable hypothesis?

The graphs illustrate change in a lizard population over time.

Which process most likely led to the change in the lizard population?

A mutation occurs in the genes that code for coat color in deer.

Which change will most likely result from this mutation?

The skeletons of mammalian forelimbs represent variations of a structure that was present in their common ancestor.

What has most likely caused the variation in forelimbs?

Analyze the graph on the right, what type of isolation is occurring that allows these frog species to remain separate?

In North America, the eastern spotted skunk mates in late winter, and the western spotted skunk mates in late summer.

Even though their geographic ranges overlap, the species do not mate with each other. What most likely prevents these two species from interbreeding?

Congratulations!

You have finished Units 6-7 Review! Genetics & Evolution!

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If you need further review- check out the Keystone Review Resources in your Biology Schoology course. You can also replay this lesson as many times as you need to! Link is in the review folder.