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WorksheetsPedigrees & Karyotypes
Total questions: 20
Worksheet time: 27mins
Which of the following is/are TRUE about this karyotype?
The individual is a female.
The individual has Trisomy 21/Down Syndrome
The individual has a normal number of chromosomes for a human
The individual has 22 pairs of autosomes and one pair of sex chromosomes
In humans, the 23rd pair of chromosomes are called:
Autosomes
Sex chromosomes
Chromatids
Gender chromosomes
In this human karyotype, is the individual male or female?
Male
Female
What chromosomal disorder is displayed by this karyotype?
Turner (XO) Syndrome
Down Syndrome
Trisomy 18
Klinefelter's (XXY) Syndrome
How many alleles does a child get from each parent for a trait?
1
2
3
4
Dominant alleles are represented by a ---
capital letter.
lowercase letter.
Aa, DD, Bb, yy are all examples of ---
genotypes.
phenotypes.
In a heterozygous genotype, the _____ allele takes over in the phenotype.
recessive
dominant
both
What you see, or the physical appearance of an organism, is called the ---
genotype.
phenotype.
What is the mode of inheritance shown here?
Recessive because it "skips" a generation
Dominant because it shows up in every generation
If this pedigree shows a recessive disorder, what MUST the genotype of individual II-3 be?
HH
Hh
hh
