Which of the following describes an autosome? It determines the sex in humans. It is a...
Which of the following describes an autosome?
| It determines the sex in humans. | |
| It is a chromosome that is connected at its centromere to its identical copy. | |
| It is a dominant chromosome | |
| It is not a sex chromosome. |
Homework Answers
Autosomes are numbered chromosomes that determine all characteristics in an organism not linked to their gender. Thus, autosomes are not sex chromosomes. Humans have 22 pairs of autosomes and 1 pair of sex chromosomes. Autosomes will be present as pairs in an organism. The two chromosomes in a pair are identical genetically and morphologically. The sister chromatids of the chromosomes replicated during cell division is attached at the centromere. Even Sex chromosomes can be present as identical copies, XX in females.
Autosomes can be have genes that can be dominant or recessive. A single copy of Dominant alleles of genes on autosomes is sufficient to express the phenotype. Two copies of recessive alleles are required to exhibit the recessive characteristics.
Right choice: It is not a sex chromosome.
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Which of the following describes an autosome?
It determines the sex in humans.
It is a...
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Options for 1: sex chromosome, an autosome
Options for 2: female, male
The following image is a karyotype, which is basically a photograph (taken through a microscope) of all the chromosomes present in a normal cell of an individual. Use the human-cell karyotype shown here to answer the questions. r ICSC ID 3 5 N 6 7 8 9 10 11 12 13 14 15 16 17 00 19 20 21 22 х...
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Match each phenotype description to its corresponding sex chromosome genotype in humans. XY with SRY deleted XXX XXY XYY XO with SRY on an autosome phenotypically male but karyotype indicates presence of only X chromosome Answer Bank phenotypically female but karyotype indicates presence of both sex chromosomes phenotypically male with an increase in average stature phenotypically female with some abnormalities and overexpression of X chromosome genes phenotypically male with sterility and hypogonadism
Numbered in the order that they appear
Options for 1: sex chromosome, an autosome
Options for 2: female, male
The following image is a karyotype, which is basically a photograph (taken through a microscope) of all the chromosomes present in a normal cell of an individual. Use the human-cell karyotype shown here to answer the questions. r ICSC ID 3 5 N 6 7 8 9 10 11 12 13 14 15 16 17 00 19 20 21 22 х...
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