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Mendel’s Genetics. Group 1 Period 1 Griffin McComb , Lizzy , Alina , Hannah, Suhani. Vocab. Genetics – the scientific study of hereditary Fertilization – joining of male and female reproductive cells

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mendel s genetics

Mendel’s Genetics

Group 1

Period 1

Griffin McComb, Lizzy, Alina, Hannah, Suhani

vocab
Vocab
  • Genetics – the scientific study of hereditary
  • Fertilization – joining of male and female reproductive cells
  • True Breeding – organisms that produce offspring identical to themselves if allowed to self pollinate
  • Trait – a specific characteristic
  • Hybrid – offspring of crosses between parents of different traits.
vocab1
Vocab
  • Genes – chemical factors that determine traits
  • Alleles – the different form of a gene
  • Segregation – the separation of alleles
  • Gametes – specialized cells involved in reproduction (sex cells)
meiosis vocab
Meiosis Vocab
  • Homologous – chromosomes that each have a corresponding chromosome from the opposite sex parent
  • Diploid – a cell that contains both sets of homologous chromosomes
  • Haploid – a cell that contains only a single set of chromosomes and therefore only a single set of genes.
  • Meiosis – process by which the number of chromosomes per cell is cut in half through the separation of homologous chromosomes in a diploid cell.
meiosis vocab1
Meiosis Vocab

Tetrad - structure containing four chromatids that form during meiosis.

Crossing over- process in which homologous chromosomes exchange portions of their chromatids during meiosis.

key concepts
Key concepts
  • The principal of dominance states that some alleles are dominant and others are recessive.
  • During gamete formation, alleles segregate from each other so that each gamete carries only a single copy of each gene.
interphase i
Interphase I
  • Cells undergo a round of DNA replication forming duplicate chromosomes.
prophase i
Prophase I
  • Each chromosome pairs with its corresponding homologous chromosomes to form a tetrad.
metaphase i
Metaphase I
  • Spindle fibers attach to the chromosomes.
anaphase i
Anaphase I
  • The fibers pull the homologous chromosomes toward opposite ends of the cell.
telophase i and cytokinesis
Telophase I and Cytokinesis
  • Nuclear membranes form.
  • The cell separates into two cells
prophase ii
Prophase II
  • Meiosis I results in two haploid daughter cells, each with half the number of chromosomes as the original cell.
metaphase ii
Metaphase II
  • The chromosomes line up in a similar way to the metaphase stage of meiosis.
anaphase ii
Anaphase II
  • The sister chromatids separate and move toward the opposite ends of the cell.
telophase ii and cytokinesis
Telophase II and Cytokinesis
  • Meiosis II results in four haploid daughter cells.
slide16
Quiz!
  • In which phase of meiosis does the cell separate into two cells?
  • Metaphase
  • Telophase
  • Anaphase
  • Interphase
slide17
Quiz!
  • What is the first stage of meiosis?
  • Metaphase
  • Prophase
  • Interphase
  • Telophase
slide18
Quiz!
  • A cell that contains both sets of homologous chromosomes is a…?
  • Diploid
  • Haploid
  • Tetrad
  • Polygenic
slide19
Quiz!
  • What is the first stage of mitosis?
  • Metaphase
  • Prophase
  • Anaphase
  • Telophase
slide20
Quiz!
  • Two identical chromosomes are also known as…?
  • Centrosomes
  • Chromatids
  • Centrioles
  • Brother cells
slide21
Quiz!
  • What is the correct definition of homologous?
  • Process of cell division
  • Chromosomes that can have corresponding chromosomes from the opposite sex parent.
  • Chromosomes that have different gene sequence
  • The process which cells undergo to reproduce DNA
slide22
Quiz!
  • What is Meiosis?
  • Process of reproduction division in which the number of is a process of reduction division in which the number of chromosomes per cell is cut in half
  • Cell division
  • Cell reproduction
  • Haploid gamete cell
slide23
Quiz!
  • Which is the correct order of meiosis?
  • Telophase 1, telophase 2, metaphase1, anaphase1
  • Anaphase2, telophase2, metaphase2, prophase2
  • Interphase1, prophase1, metaphase1, anaphase1, telophase1, cytokinesis.
  • Prophase, interphase1, anaphase1, metaphase1, telophase1
slide24
Quiz!
  • What is the difference between mitosis and meiosis?
  • Mitosis: production of 2 genetically indentical diploid cells. Meiosis: 4 genetically different haploid cells.
  • Mitosis: cell reproduction. Meiosis: sex cell reproduction
  • Mitosis: happens in females only, Meiosis: happens in males only
slide25
Quiz!
  • How many cells does mitosis produce?
  • 5
  • 2
  • 4
  • 12
answers
Answers.

1.B 8.C

2.C 9.A

3.A 10.C

4.B

5.B

6.B

7.A