Meiosis and Heredity 22-23

What is it called when a sperm and egg meet?

• meiosis
• fertilization
• cell division
• mitosis

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

Which letter(s) in the diagram correspond to cells that are haploid? 

• A
• B
• C

Compared to the number of chromosomes contained in a body cell, how many chromosomes would normally be contained in a gamete?

• The same number

• One-fourth as many

• Twice as many

• Half as many

Diploid Cells are represented by

• 2n

• n

• 4n

The different forms of a gene

• heredity

• gene

• alleles

• meiosis

This trait always shows up in an organism when the allele is present

• dominant allele

• recessive allele

• codominant allele

• sex linked allele

An organism that has two different alleles for a trait (hybrid)

• fertilization

• genotype

• homozygous

• heterozygous

Stripes

• Genotype

• Phenotype

• Phylotype

• Heterotype

According to this diagram, the result of spermatogensis is for sperm cells, each with

• strands of DNA that resulted from crossing over

• half the original number of chromosomes.

• genetically identical strands of DNA.

• complete copies of all the original chromosomes.