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Genetics and Heredity Review Webquest

Page history last edited by R Thomas 8 years, 10 months ago

Genetics and Heredity Review Webquest

 

Use the websites to answer the questions about genetics and heredity.

 

Watch this video first: What is Heredity?

 

Heredity and Genetics

1) What is Heredity?

 

 

2) What is the study of heredity? 

 

 

3) What are traits?

 

 

4) What are genes made of?  What structures are genes strung together in? 

 

 

5) What do genes have the instructions for making?  What smaller units are these things made of? 

 

 

6) How a trait develops depends on what two things?

 

 

Mendel's Experiments

7) Who formed the basic laws of heredity?

 

 

8) Why do we call him “The Father of Genetics?”

 

 

9)What is special about “purebred” plants?

 

 

10) Mendel decided that traits are handed down through what in the sperm and egg? 

 

 

11) How many “factors” for every trait must a plant (or animal, or human) have?

 

 

12) How many factors does each egg or sperm get?

 

 

13) What do we call Mendel’s “factors”?

 

 

14) What are dominant alleles?

 

 

15) What are recessive alleles?

 

 

16) What is the scientific term for “purebred”?

 

 

17)  What term do we use for “hybrid” alleles? 

 

 

Dominant, Recessive Genes

18) What does homozygous mean? 

 

 

19) What does heterozygous mean? 

 

 

20) How do we write a dominant allele?

 

 

21) How do we write a recessive allele? 

(Try the questions on the website!) 

 

 

22) What is phenotype?

 

 

23) What is genotype?

 

 

24) What are two genotypes that could produce a dominant phenotype?

 

 

25) What is the ONLY genotype that can produce a recessive phenotype?

(Try the questions on the website!)

 

 

STOP HERE!!!

 

 

Punnett Squares

26) What are Punnett squares used for?

 

 

27) Predict the results from the Punnett square on the website:  TT x tt

 

 

28) Predict the results from this Punnett square on the website:  Tt x Tt

 

 

29) Look at the information about widow’s peak from the website.  Complete the Punnett square to show the possible outcomes of a cross of a heterozygous father with a widow's peak with a homozygous mother with a widows's peak.

 

 

What fraction of offspring would have a widow's peak?

 


What fraction of offspring would not have a widow's peak?

 

 

 

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