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Sex linked traits no

Sex LInked Trait Note Review

QuestionAnswer
1. How is gender determined in reptiles? environmental
2. How is gender determined in mammals? genetics
3. What do you call the 22 human chromosomes that have nothing to do with gender-based traits? autosomal chromosomes
4. What pair of chromosomes in the human cell are not homologous? sex determining chromosome
5. What chromosome determines male-ness? The y-chromosome (yy or xy)
6. Which is the result of a homozygous recessive condition- maleness or femaleness? Female (xx)
7. What sex chromosomes are found in sperm cells? both x and y
8. What on the X chromosome makes male reproductive organs develop? SRY
9. What is the relationship between color-blindness, hempophelia and X chromosomes? mutations that cause colorblindness and hemophelia are found on the X chromosomes
10. A female who is XXh does NOT have hemophelia, why? hemophelia is recessive, so both chromosomes need to have the hemophelia trait
11. What is a carrier? someone who carries a gene for a trait, but the trait is not expressed
12. A man who is XhY DOES have hemophelia, why? All of the x chromosomes he has have the hemo trait
13. What are the only 2 chromosomes that can carry sex-linked traits? X &Y
Created by: russcrick
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