Punnett square

In 1965 a faulty study was performed, which suggested that the XYY karyotype was associated with violent antisocial criminal behavior. The study was later disproven, as there is no association between an additional Y chromosome and abnormal behavior. Explain how this karyotype could arise in someone by mentioning the sex of the affected person, the identity of the parent (mother or father) in which the non-disjunction occurred, and the specific meiotic division during which non-disjunction took place.

Part of the karyotype of a diploid individual who is heterozygous for one chromosomal rearrangement is shown in the diagram. The chromosomes involved in the rearrangement, and their homologous pair, are shown. The location of each gene is labeled using horizontal lines and the name of each gene is labeled using letters or numbers. Answer the following questions about the diagram. A. What rearrangement is shown? Be as specific as possible. B. Describe a mutation scenario that could cause this rearrangement to be formed. A B D E F G H IXI A B с D E IIXDD 1 2 3 4 5 6 F G H D 1 2 34 5 6 X

Corn has a chromosome number of 2=20. Supposing there are different aneuploidy/polyploidy in corn, provide the correct answer in the table below. 1. Type of aneuploidy/polyploidy Formula Chromosome Chromosome Types of gametes (n, n+1, n+2, n-1, n-2) number Configuration 1. monosomic 2. trisomic 3. double trisomic 4.nullisomic 5.tetrasomic 6. Autotetraploid 7. allotetraploid

The inactivation of one of the X chromosomes forms a structure known as a(n):   telomere   centromere   autosome   Barr body     A man who carries a dominant X-linked trait will pass this trait on to:     all of his sons   all of his daughters   half of his daughters and half of his sons   half of his daughters   An individual possessing two copies of the same sex chromosomes is known as:   Question 3 options:   heterogametic   homozygous   diploid   homogametic

3 10 11 12 13 14 15 16 18 19 20 21 22 Y Is this karyotype male or female? Kind of error (if any). Name of Syndrome

How many total chromosomes were on your karyotype sheets? How many of the chromosomes are autosomes? Is this child a male or a female? How do you know? Does this child appear to have a genetic disorder? If so, what genetic disorder does this child have?

How many gametes are possible with the 3 genes of an individual of genotype AaBRBBCc

The image shows a pair of homologous chromosomes from a single parent before gamete production. M1 and M2 are maternal chromosomes, while P1 and P2 are paternal chromosomes. Two traits are shown: D represents seed color (D – green, d – yellow), while F represents flower color (F – purple, f – white). These two traits follow the patterns of basic Mendelian genetics. During crossing-over between the M2 F allele and the P1 f allele, a mutation occurred and the portion of P1 did not reattach to the chromosome. Which of the following explains what would happen to the proportion of white flowers in a population resulting from this mutation? A - There would be an increase in the proportion of white flowers because the f allele is distributed to more gametes. B - There would be a decrease in the proportion of white flowers because the f allele is not distributed to as many gametes. C - There would be an increase in the proportion of white flowers because the f allele would not be masked by the…

The order of the genes on a plant chromosome is A, B, C, where A and B are located 10 cM apart and B and C are located 3 cM apart. What is the probability that the trihybrid ABC/abc will produce any kind of recombinant gamete?