exam 4

The chromosomes that pair up during meiosis, are called __________ chromosomes.  

• homozygous 
• asexual
• homologous
• genes

A male shark has 40 chromosomes in each of its sex cells. How many would be present in its body cells?

• 20
• 40
• 80
• 160

What causes genetic variation in meiosis?

• chromosomes lining up
• crossing over of chromosomes
• separation of chromosomes
• chromosomes pulling apart

A haploid cell from a male camel has 35 chromosomes. What type of cell is this? Choose all that apply

• Sperm

• Egg

• Heart Cell

• Muscle Cell

A dog has 78 chromosomes in its body cells.  What is the diploid number?

• 78
• 39
• 1
• 100

Nondisjunction can result in 

• trisomy conditions
• monosomy conditions
• additional sex chromosomes
• all of these

When a person has ONE extra chromosome in their cells, this is called ________.

• trisomy

• monosomy

• haploid

• diploid

Down Syndrome is also known as _________.

• Trisomy 18

• Trisomy 21

• Monosomy X

• Trisomy 13

What is the chromosomal condition of the individual whose karyotype is seen in the image?

• Monosomy X (Turner's Syndrome)
• Trisomy 21 (Down's Syndrome)
• Trisomy 13 (Patau Syndrome)
• Trisomy 18 (Edwards's Syndrome)

This karyotype was taken from a  _________.

• male with Turner's syndrome
• male with Klinefelter's syndrome
• female with Klinefelter's syndrome
• male with Down's syndrome