Test Questions In Sex Determination
Not what you're looking for?
1. How is sex determined in grasshoppers? Can you find other examples of organisms with a similar system of sex determination?
2. Some marine shellfish, such as limpets, become either male or female depending on where they grow. What makes one limpet a male and another a female?
3. Are there other organisms whose sex is determined by environmental factors and not by genetics factors?
4. Certain human chromosomal aberrations that occur during meiosis result in eggs or sperm with two copies of the X chromosome. What happens if that gamete is fertilized? What syndrome is characterized by an XXY genotype? What syndrome is characterized by an XXX genotype? What can you learn about this syndrome?
5. Another type of human chromosomal aberration results when a person inherits one X and two Y chromosomes. What event must occur during meiosis for this to happen? What syndrome is characterized by an XYY genotype? What can you learn about this syndrome?
Purchase this Solution
Solution Summary
Sex in different insects, marine life and mamals is determined by a number of factors, including environmental, genetics and occasional abberations.
Solution Preview
I hope this helps. I have attached it as a word document as well. Welcome to BrainMass! I hope that you find this to be a good way to help you learn. If you have any questions or concerns regarding this document, dont hesistate to contact me on the message board. I hope you will return to Brainmass again.
*****************************************************************************************
Bio homework
1. How is sex determined in grasshoppers? Can you find other examples of organisms with a similar system of sex determination?
In grasshoppers, the male is heterogametic while the female is homogametic. Heterogametic means that different types of gametes are produced. Homogametic means that only one type of gamete is produced. So the male grasshopper produces 2 types of sperm, 1 type has 11 autosomes and 1 x. The other type of sperm contains 11 autosomes and no x. Females produce only 1 type of egg with 11 autosomes only. Humans use this type of sex determination. Males produce 2 types of spermatozoa, one has the x chromosome and one has the y chromosome. Females produce only the y chromosome.
http://www.studentsguide.in/genetics/sex-determination-in-animals/sex-determination-in-grasshopper.html
2. Some marine shellfish, such as limpets, ...
Purchase this Solution
Free BrainMass Quizzes
Hemophilia: Fact or Fiction
Do you know the truth about hemophilia? Test your knowledge here.
Feeding Babies
Do you know the science behind feeding babies? Test your knowledge with this quiz.
Identifying Variables in Science Experiments, Part 2
Using sample experiments, test yourself to see if you can identify independent, dependent, and controlled variables. Identifying variables is key in understanding and developing experiments. The questions are biology related, but this can be applied to any area of science.
BIOLOGY
Basics in biology
Birth 101
Do you know about childbirth? Find out with this quiz.