BIO152H5 Study Guide - Final Guide: Homologous Chromosome, Y Chromosome, Gamete

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pinkfish42

26 May 2016

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Bio 152 fall 2014 final exam study guide: chapters 12&13. Genes are the units of heredity, and are made of dna. Genes are passed via reproductive cells called gametes (sperm and eggs) Each gene has a specific chromosomal location or locus. Human somatic cells have 23 pairs of chromosomes. Karyotype: ordered display of the chromosomes pairs from a cell. The two chromosomes in each pair are homologous chromosomes, or homologs. Chromosomes in a homologous pair are the same length and shape and carry the same genes. Sex chromosomes, called x and y, determine sex of an individual. Human females have a homologous pair of x chromosomes (xx). The remaining 23 pairs of chromosomes are called autosomes. Homologous chromosome pairs include one chromosome from each parent. The 46 chromosomes i human somatic cells are two sets of 23; one from mother and one from father. A diploid cell (2n) has two chromosome sets. For humans, the diploid number is 46 (2n=46)

Related Questions

The first sign of cytokinesis in a plant cell is the formation of a __.

In order for a cell to become cancerous, oncogenes must be __ and tumor suppressors __.

An __ is any gene that helps transform a normal cell into a tumor cell.

In humans, cells that produce gametes are collectively called ___.

During what stage of the cell cycle does DNA replicate?

A diploid karyotype is abbreviated by ___.

True or False: Human cells have 23 pairs of chromosomes.

The chromosomal designation for a human male is ___.

True or False: Germ cells undergo meiosis.

What is the process by which homologous chromosomes exchange genetic material?

Who made the most lasting impression on the science of genetics?

Ture or False: During anaphase duplicate chromosomes split apart.

Alternate forms of the same gene are called ___.

What did Mendel choose for his genetic experiments?

True or False: When Mendel crossed short (tt) pea plants with short (tt) pea plants, the offspring were all short.

Which of the following statements are false about the comparison between mitosis and meiosis? Select all. that apply.

1.Two cytokinesis events occur in mitosis but only one in meiosis

2.Meiosis results in half the number of homologous chromosome pairs as the original cell whereas mitosis has the same number as the original cell

3. Mitosis occurs in somatic cells while meiosis only occurs in germ cells

4.Both haploid and diploid cells undergo mitosis and meiosis

5.Both mitosis and meiosis have one round of DNA replication in the preceding Interphase period

6. Chromosomes undergo disjunction in mitosis but not in meiosis

7.Meiosis leads to a reductive division in the number of chromosomes whereas mitosis does not

Thank you!

Which of the following statements are false about the comparison between mitosis and meiosis? Select all. that apply. Multiple answers: You can select more than one option A Two cytokinesis events occur in mitosis but only one in meiosis B Meiosis results in half the number of homologous chromosome pairs as the original cell whereas mitosis has the same number as the original cell C Mitosis occurs in somatic cells while meiosis only occurs in germ cells D Both haploid and diploid cells undergo mitosis and meiosis E Both mitosis and meiosis have one round of DNA replication in the preceding Interphase period F Chromosomes undergo disjunction in mitosis but not in meiosis G Meiosis leads to a reductive division in the number of chromosomes whereas mitosis does not Unanswered

BIO152H5 Study Guide - Final Guide: Homologous Chromosome, Y Chromosome, Gamete

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