Download GENETICS REVIEW 7A

Name___________________________________________________________________Date____________Period______
GENETICS REVIEW 7A
A. Complete each statement below.
1. Mendel hypothesized that each trait is controlled by ______________________________
2. The combined DNA of 2 organisms is known as _______________________________________
3. Another name for a pure dominant genotype like TT is _________________________.
4. Another name for a pure recessive genotype like tt is _______________________________.
5. Another name for hybrid offspring like Tt is ______________________________.
6. The genetic makeup of an organism is called its ______________________________.
7. The appearance of an organism is also called its ______________________________.
8. Organisms that have identical alleles for a particular trait are _______________________________
9. Crossing organisms with desirable traits to produce offspring with those traits is known as ______________________
10. An organism that has an allele for brown eyes and an allele for blue eyes is ___________________________
11. A graphic representation of an individual’s family tree is called a _______________________________
12. Genetics is the study of ______________________________________.
13. Heredity is defined as __________________________________________________________________.
14. _____________________ is the “Father” of modern genetics, who used _____________________ to understand important concepts of
genetics and heredity.
15. A _______________________________ is a change in a gene or chromosome.
16. A mutation can be passed on to an organisms offspring if _________________________________________________
17. A mule is a ___________________________ because it is the result of crossing 2 genetically different but related species suc18
19. A disadvantage to __________________________________ is that the offspring from these crossings are more prone to genetic disorders.
19. Put the following terms in order from largest to smallest: Chromosomes
Nucleus
DNA
genes
____________________________________________________
20. A clone is identical to the parent because _______________________________________________________________.
B. PUNNETT SQUARES
1. In pea plants, green (G) is dominant to yellow (g). If a homozygous green plant is crossed with a homozygous yellow plant, what genotypes
and phenotypes would you expect the offspring to have?
2. In a cross between two heterozygous flowers, where blue (B) is dominant to white (b), what are the phenotypes and genotypes of the
offspring?
3. Correctly cross a blue eyed person with a heterozygous brown eyed person. Give the phenotype and genotype.
4. If a females fruit fly heterozygous for red eyes is crossed with a white eyed male, what will the phenotypes and gentypes of the offspring be?
5. In humans, long eyelashes are dominant (L). Short eyelashes are recessive. What is the probable phenotype and genotype if
two heterozygous individuals for short and long eyelashes are married?
C. PEDIGREE CHARTS
1. Use Figure A to answer the questions below. In a pedigree, a square represents a male. If it is darkened he has
hemophilia; if clear, he had normal blood clotting.
a. How many males are there? __________________
b. How many males have hemophilia? ____________
c. How many female are there? _________________
d. How many females have hemophilia? __________
e. How many marriages are there? _______________
f. How many children did the first couple (couple in row I) have? ______________
g. How many children did the third couple (couple in row III) have? _____________
h. How many generations are there?_____________________________
i. How many members are there in the fourth generation? _____________
2. The pedigree shows the inheritance of attached earlobes.
a. Is the trait for attached earlobes
dominant or recessive? How do you know?
__________________________________
b. Do the parents in generation 1 have attached or free earlobes?__________
c. How many generations are represented? __________
3. The pedigree shows the inheritance of tongue rolling.
a. Is this trait dominant or recessive? How do you know? _________________________
b. Can the parents in generation 1 roll their tongue?_______________________
c. How many generations are represented? ___________
d. How many children did the couple in Generation 1 have? __________
e. How many of these children can roll their tongue?________________
D. Answer the questions below in the space provided.
1. An individuals chromosomes are pictured at the right.
Is this person a male or female?_______________
How do you know? _______________________________
_______________________________________________
2. Dolly was the first mammal to be cloned from an adult sheep. Look at the figure below showing how Dolly was cloned. Match the
statements above with the matching number on the figure.
Fi
3. Use the diagram below to answer the following questions.
a. What process is represented in the diagram?
____________________________________
b. What is the ring of bacterial DNA called?
____________________________
A
3. Identify structure A. ____________________
d. If the gene for human insulin is inserted into the bacterial DNA, what will the bacteria cell be able to do?
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