Homework Answers
There are three different ways to equalise the dosage of X between two sexes:-
Random inactivation of one female X-chromosome (X inactivation)
A two fold increase in the transcription of single male X-chromosome
Decreased transcription by half in both of the X-chromosomes of a hermaphrodite organisms.
It is necessary because it is designed to cancel the potentially negative consequences of sex chromosome hermaphroditism.
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While investigating a new animal species you find that females contain two X chromosomes and males...
Scientists discover many new species with different mechanisms for dosage compensation between "male" and "female" organisms....
Scientists discover many new species with different mechanisms for dosage compensation between "male" and "female" organisms. Which of the following cases would result in correct sex chromosome dosage between males and females within the species? Choose ALL correct answers 4 points possible A species that has X and Y sex chromosomes where males are XY and females are XX. Gene expression of the SRY gene is doubled in males, and both of the X chromosomes is expressed in females. A...
Scientists discover many new species with different mechanisms for dosage compensation between "male" and "female" organisms....
Scientists discover many new species with different mechanisms for dosage compensation between "male" and "female" organisms. Which of the following cases would result in correct sex chromosome dosage between males and females within the species? Choose ALL correct answers 4 points possible A species that has S and T sex chromosomes where males are ST and females are SS. Gene expression of the single chromosome in males is doubled and females do not inactivate either Schromosome. A species that only...
(2points) You are studying a species of alga. Haploid cells have 17 chromosomes. Is this surprising...
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16. So far we have been dealing with alleles found on autosomal chromosomes. These chromosomes contain all the genetic information that is not gender related. As a human, you have 44 autosomal chromosomes (22 pairs → 11 chromosomes from your Mom and 11 chromosomes from your Dad). You also contain a pair of sex chromosomes. These chromosomes contain all the genetic information related to your gender. If you are female, you received an X chromosome from your Mom and an...
Read each question carefully. Write your response in the space provided for each part of each question
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Scientists discover many new species with different mechanisms for dosage compensation between "male" and "female" organisms. Which of the following cases would result in correct sex chromosome dosage between males and females within the species? Choose ALL correct answers 4 points possible A species that has X and Y sex chromosomes where males are XY and females are XX. Gene expression of the SRY gene is doubled in males, and both of the X chromosomes is expressed in females. A...
Scientists discover many new species with different mechanisms for dosage compensation between "male" and "female" organisms. Which of the following cases would result in correct sex chromosome dosage between males and females within the species? Choose ALL correct answers 4 points possible A species that has S and T sex chromosomes where males are ST and females are SS. Gene expression of the single chromosome in males is doubled and females do not inactivate either Schromosome. A species that only...
(2points) You are studying a species of alga. Haploid cells have 17 chromosomes. Is this surprising that this is an odd number? Why or why not? (2points) You are studying a species of single-celled yeast. For a group of cells that you are studying, you notice that during mitosis, some cells have 5 groups of chromosomes on the metaphase plate and others have 10 groups of chromosomes. What do you think is going on? 2. You are studying a species...
16. So far we have been dealing with alleles found on autosomal chromosomes. These chromosomes contain all the genetic information that is not gender related. As a human, you have 44 autosomal chromosomes (22 pairs → 11 chromosomes from your Mom and 11 chromosomes from your Dad). You also contain a pair of sex chromosomes. These chromosomes contain all the genetic information related to your gender. If you are female, you received an X chromosome from your Mom and an...
Check Your Understanding 3.1 1 What are chromosomes made of? number 2 How many chromosomes are in a human somatic cell? 46 chromosomes 3 The term used to refer to this full complement of chromosomes is the 4 How many chromosomes are in human gametes? 5 This is referred to as the number 6 Wa chicken's skin cell has 78 chromosomes, how many chromosomes would the chicken's sperm cell have? 7 How can we distinguish the 23 types of chromosomes...
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