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100

Chromosomes that contain genes for characteristics not directly related to the sex of an organism

Autosomes

100

In Mendel's monohybrid cross of a purebred white-flowered plant and a purebred purple-flowered plant, the F generation...

  • showed only the dominant trait.
  • showed only the recessive trait.
  • did not receive any recessive alleles.
  • remained purebred.

Showed Only the dominant trait

100

The same gene CANNOT have many versions

False

100

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100

Meiosis produces cells with how many chromosomes?

23

200

A cell has only one copy of each chromosome

Haploid

200

In a genotype for plant height, such as Tt, what does each letter represent?

  • One genome
  • One gene
  • One allele
  • One gamete

One allele

200

The mating of two organisms is called genetics

False

200

VOCAB WORD

Sex cells- eggs in a female, sperm in a male

Gametes

200

Which of the following events is an important factor in increasing variety among sexually reproducing organisms?

Testcross, Gene Linkage, Mitosis, or Crossing Over

Crossing over

300

Genes located close together tend to be inherited together

Genetic Linkage

300

What event takes place during anaphase II of meiosis II?

  • Nuclear membrane breaks down
  • Sister chromatids separate
  • Spindle fibers disassemble
  • Cytoplasm divides

Sister chromatids separate

300

Cells with little more than DNA that are eventually broken down are called Polar Bodies

True

300

How are Mitosis and Meiosis different?

Meiosis splits twice

Mitosis splits once

300

Which of the following cell types is diploid?

  • Sex Cell
  • Ovum
  • Somatic Cell
  • Gamete

Somatic Cell

400

Crosses that examine the inheritance of two different traits

Dihybrid cross

400

When is a recessive allele expressed in offspring?

  • When parents have no dominant alleles
  • When two copies are present
  • When the offspring is heterozygous
  • When one copy is present

When two copies are present

400

The exchange of chromosome segments between homologous chromosomes during phase I of Meiosis I is called crossing over

True

400
List the 8 stages of Meiosis

Prophase 1, metaphase 1, anaphase 1, telophase 1, prophase 2, metaphase 2, anaphase 2, telophase 2

400

Two chromosomes – one inherited from the mother, one from the father – that have the same length and general appearance

Homologous Chromosome

500

All of an organism’s genetic material

Genome

500

Mendel's observation that traits are inherited separately was based on what set of experiments?

  • Monohybrid crosses
  • Purebred crosses
  • Testcrosses
  • Dihybrid crosses

Dihybrid Crosses

500

Cross between an unknown genotype and an organism with the recessive phenotype is a dihybrid

False

500

A distinguishing characteristic that can be inherited is a(n)...

  • Trait
  • Cross
  • Gene
  • Allele

Trait

500

What is the phenotypic ratio when you cross two organisms that are heterozygous for both traits?

9:3:3:1