Download Baby Boom Alien Crosses

Baby Boom Alien Crosses
Name:
Date________
Period____
Standards:
 BI2. c. Students know how random chromosome segregation explains the
probability that a particular allele will be in a gamete.
 BI2. g. Students know how to predict possible combinations of alleles in a zygote
from the genetic makeup of the parents.
 BI3. a. Students know how to predict the probable outcome of phenotypes in a
genetic cross from the genotypes of the parents and mode of inheritance
(autosomal or X-linked, dominant or recessive)
Objectives:
SWBAT…
 Explain the genetic factors that influence the way we look.
 Recognize that DNA contains the genetic information that determines the way we look.
 Explain and describe how genetic information is passed from parents to offspring.
 Predict the physical characteristics of an organism based on its genetic make up.
Directions:
Part I. Alien Cross
 Open the following link: http://www2.edc.org/weblabs/BabyBoom/babyBoom.html
 Click on “Choose My Own Aliens”.
 Select two aliens as parents. Then click next.
 Click on the coin to determine if the offspring is a male or female.
 Click on the coin to determine which alleles the parents contribute to the offspring.
 Finish creating your alien.
 Capture a screenshot of your alien and its phenotypes/genotypes. Insert the image in the
table below.
Table 1. Alien Cross Offspring-Genotype
Part II. Analysis Questions
 Answer the questions below in complete sentences.
 You may use the resources below to help with this.
Resources:
 http://www.ndsu.edu/pubweb/~mcclean/plsc431/mendel/mendel1.htm
 http://anthro.palomar.edu/mendel/mendel_2.htm
 http://www.biology.iupui.edu/biocourses/N100/2k4ch10genetics.html
Questions:
1. What is the relationship between an organism’s genotype and phenotype?
2. How do genes get passed from parents to offspring?
3. Select one trait your organism has (ie eye shape). Set-up a Punnett Square
to explain your organism’s genotype and phenotype for this trait.
4. List the probability of each allele combination and also the resulting potential
phenotypes.