Correct answer: They generally affect more males than females. Explanation : Because males only have one X chromosome, while females have two, they are more likely to be affected by a problematic X chromosome. Possible Answers: Inheritance of the mother's Y-chromosome. Correct answer: Inheritance of the father's Y-chromosome. Explanation : If only males display the disorder, it is most likely a Y-linked genetic disorder. Possible Answers: Aneuploidy.
Correct answer: Aneuploidy. Explanation : Aneuploidy is a chromosomal condition in which there are an abnormal number of chromosomes in the cells of the body.
Possible Answers: A carrier mother and a colorblind father have a daughter who is born colorblind. A colorblind mother and normal father have a daughter who is a carrier for the condition. A carrier mother and a normal father have a son who is born with colorblindness. A genotypically normal mother and a colorblind father have a son who is also colorblind. Correct answer: A genotypically normal mother and a colorblind father have a son who is also colorblind.
Explanation : X-linked disorders are inherited when a parent passes on his or her X-chromosome. All other presented answer represent scenarios that are possible. Possible Answers:. Correct answer:. Explanation : The Punnett square below represents the couple's possible offspring, with the mother having genotype and the father having genotype. Disease P in the figure above is inherited in what manner? Possible Answers: The mode of inheritance cannot be determined. Correct answer: X-linked recessive.
Explanation : The first generation shows us a father with the disease and a mother without the disease. Possible Answers: Mother: Father:. Mother: Father:. Correct answer: Mother: Father:. Explanation : We know that red eyes are the dominant allele, which means white eyes are the recessive allele. White-eye daughters: White-eye sons: Each parent must have at least one recessive, white-eye allele.
Father: Since one parent has white eyes and the other has red eyes, we know the mother must have red eyes. Mother: From this cross, we are able to get the percentages reported in the question. Copyright Notice. View AP Biology Tutors.
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Our Company. Varsity Tutors. Privacy Policy. Terms of Use. Non-sex determining chromosomes are responsible for this inheritance. Moreover, their control takes place via the genes located on the autosomes. In autosomal inheritance, both males and females are affected with equal frequency. There are two types of autosomal inheritance: autosomal dominant and autosomal recessive inheritance. In autosomal recessive inheritance, the trait is expressed only when the homozygous condition exists, and both parents must carry the recessive alleles in order to express it.
Likewise, the autosomal inheritance causes most hereditary disorders that occur among the people. Sex-linked inheritance is due to the transmission of sex genes in X and Y chromosomes. Whereas, autosomal inheritance is due to the transmission of genes in autosomes or non-sex determining chromosomes.
So, this is the key difference between sex-linked and autosomal. Unlike sex-linked inheritance, autosomal inheritance affects males and females with equal frequencies. Therefore, we can consider this too as a difference between sex-linked and autosomal. Moreover, a further difference between sex-linked and autosomal is the types of each inheritance.
There are two types of sex-linked inheritance as sex-linked recessive and sex-linked dominant inheritance while there are two types of autosomal inheritance as autosomal recessive and autosomal dominant inheritance. Also, unlike autosomal inheritance, you can easily understand the mode of sex-linked inheritance with the help of a family tree. How do autosomal traits differ from sex-linked traits? Longtime teacher. Jan 1, The pairs are identical in size, shape, the genes that they carry, but not always the same form of the gene The sex chromosomes are so named because of their shape but unlike autosomal pairs they are not identical in shape.
Mandira P. Nov 30, Autosomal traits would show Mendelian inheritance pattern but sex-linked traits would show criss cross inheritance. Sex-linked trait is often controlled by gene present only on X chromosome, hence no corresponding allele is present on Y chromosome. Explanation: Male members of a population are affected in more number by sex-linked genetic diseases, which is not the case when the trait is autosomally linked.
Related questions What are linked genes? How many autosomes do human cells contain? How many autosomes are in a karyotype? What is hemizygous?
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