Level Genetics Review Genetics Worksheets With Answers (Page 2 of 6) in pdf

Level Genetics Review Genetics Worksheets With Answers Page 2

5. Some of our traits are determined by more than one pair of alleles,

such as blood type and hair color. What are these types of traits

called? Multiple Alleles

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7. If an organism’s diploid number of chromosomes is 36 chromosomes,

what is its haploid number of chromosomes? 18

8. What does a Punnett square show us? Offspring of F1 generation

9. What are the human male gametes? Female gametes?

Sperm

Egg

10. Are the gametes haploid or diploid? haploid

11. How many pairs of chromosomes are found in human body cells? 46

12. How many chromosomes are found in human sex cells? __23___ Are the chromosomes in pairs? no

13. What is the normal male genotype? Normal female genotype?

14. Who determines the sex of the offspring? male

15. What is the probability of having a male or female child? 50%

16. Describe the location of the gene 16p13. OMIT

17. In a certain species of frogs, L is the gene for long legs. The gene for short legs is represented by l.

Two frogs were bred in a lab. A homozygous dominant male and a heterozygous female produced

many offspring.

a. What are the parent phenotypes? Long legs x long legs

b. What are the parent genotypes? LL x Ll

c. What is the phenotypic ratio of the offspring? 4: 0 : 0

d. What is the genotypic ratio of the offspring? 2 : 2

18. In cats, black is dominant to yellow for coat color. Cross a homozygous black cat with a homozygous

yellow cat. B=black, b=yellow

a. What is the genotype of both parents? BB x bb

b. What is the genotype of the offspring? 4:0:0 (4 Bb)

c. What is the phenotypic ratio of the offspring? 4: 0: 0 (all black)

19. Cross a heterozygous brown-eyed man with a heterozygous brown-eyed woman. B=brown, b=blue

a. What is the genotype of both parents? Bb x Bb

b. What is the genotypic ratio of the offspring? 1: 2: 1 (BB, Bb, bb)

c. What is the phenotypic ratio of the offspring? 3:1 (3 black, 1 blue)

20. What are autosomes? The first 22 pair of chromosomes on karyotype

21. What types of traits are controlled by genes located on the sex chromosomes? Sex- linked traits

22. What are homologous chromosomes? Paired chromosomes

23. How many different blood types alleles are there? List them.

3- I

, I

, I (represents A, B, O)

Level Genetics Review Genetics Worksheets With Answers Page 2