Meiosis ~ Biology

How many cells are produced during telophase I ? - 4 - 8 - 2 - 0

2

NORMAL HUMANS HAVE 46 CHROMOSOMES, HOW MANY WILL THE GERM CELLS HAVE AFTER MEIOSIS? - 46 - 23 - 12 - 92

23

Meiosis makes sperm and egg cells. In humans, sperm and egg cells each have _____ chromosomes. Therefore a fertilized human egg cell (sperm and egg cell combined) would create a cell with _____ chromosomes. - 23, 46 - 46, 23 - 2, 4 - 50, 100

23, 46

Diploid Cells are represented by - 2n - n - 4n - 1/2 n

2n

How many daughter cells are produced from meiosis ? - 10 - 6 - 4 - 2

4

Humans have how may chromosomes ? - 112 - 46 - 8 - 67

46

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

80

What are the two most likely sequences of these genes on a gene map for this chromosome? Select two options. A. B, A, C B. A, B, C C. C, B, A D. C, A, B

A. B, A, C D. C, A, B

How could crossing over affect the distribution of the four alleles: A, a, B, and b? A. Crossing over would always keep A and B together on the same chromosome, and keep a and b together on the same chromosome. B. Crossing over would always put A and B on different chromosomes, and always put a and b on different chromosomes. C. Crossing over would sometimes, but not always, exchange the positions of A and a, and of B and b, on homologous chromosomes. D. Crossing over would sometimes, but not always, delete one or more of the four alleles from both homologous chromosomes.

A. Crossing over would always keep A and B together on the same chromosome, and keep a and b together on the same chromosome.

MEIOSIS - REDUCES THE NUMBER OF CHROMOSOMES BY ONE HALF - PRODUCES UNIQUE SEX CELLS-1N - ALLOWS TRAITS TO BE PASSED TO OFFSPRING - ALL ARE TRUE - INCREASE GENETIC VARIATION

ALL ARE TRUE

Which of the following sentences is INCORRECT - All of your body cells under go Meiosis (to produces haploid gametes) and Mitosis (to grow and repair body cells) - A gamete is haploid cell in sexually reproducing organisms sperm & Ovum are haploid and they fuse during a process called fertilization to make a diploid cell called a zygote - Meiosis allows for gametes to be genetically different allowing the offspring to be genetically unique

All of your body cells under go Meiosis (to produces haploid gametes) and Mitosis (to grow and repair body cells)

When does replication of chromosomes occur in animal cell meiosis? - Before Meiosis I and Meiosis II - Before Meiosis II Only - Before Meiosis I Only - During Prophase I and Prophase II

Before Meiosis I Only

How many sperm cells are formed from an original cell in a Drosophila fruit fly at the conclusion of meiosis? A. two haploid sperm cells B. two diploid sperm cells C. four haploid sperm cells D. four diploid sperm cells

C. four haploid sperm cells

WHAT TYPE OF CELLS STORE THE GENETIC INFORMATION THAT IS PASSED TO OFF-SPRING - BODY CELLS - MITOSIS - EGG - SPERM - EGG AND SPERM

EGG AND SPERM

CROSSING OVER INCREASES - LIFE SPAN - GENETIC VARIATION - THE NUMBER OF OFF-SPRING - ALL ARE TRUE

GENETIC VARIATION

MEIOSIS PRODUCES 4 CELLS-THE CHROMOSOME NUMBER IS ... - DIPLOID - HAPLOID

HAPLOID

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

Half as many

What stage in Meiosis is the most similar to Mitosis? - Meiosis ! - Meiosis II

Meiosis II

MEIOSIS PRODUCES 4 CELLS, THEY ARE - N - 2N - 3N

N

MITOSIS - INCREASES GENETIC VARIATION - ALLOWS TRAITS TO BE PASSED ON TO OFFSPRING - PRODUCES 2 IDENTICAL DAUGHTER CELLS - ALL ARE TRUE

PRODUCES 2 IDENTICAL DAUGHTER CELLS

CROSSING OVER TAKES PLACE DURING - PROPHASE II - PROPHASE I - INTERPHASE - METAPHASE I

PROPHASE I

DURING WHICH PHASE OF MEIOSIS DOES GENETIC VARIATION - INCREASE - PROPHASE II - PROPHASE I - ANAPHASE I - ANAPHASE II

PROPHASE I

What are homologous chromosomes? - Pairs of chromosomes with different genes on each. - Pairs of chromosomes with the same genes on each. - Pairs of chromosomes with no genes. - Pairs of chromosomes with the wrong genes on each.

Pairs of chromosomes with the same genes on each.

FERTILIZATION OCCURS WHEN - THE SPERM UNITES WITH THE EGG - THE SPERM UNDERGO MEIOSIS - THE EGG UNDERGOES MEIOSIS - THE EGG AND SPERM UNDERGOES MEIOSIS

THE SPERM UNITES WITH THE EGG

Which statement is incorrect - Prophase 1 allows for genetic variation b/c homologous chromosomes cross over - Metaphase I allows for genetic variation b/c the homologous chromosomes line up independently - Metaphase ii allows for genetic variation b/c the unique sister chromatids line up independently - There are 2 of each stage in meiosis : 2 Interphase, 2 PMAT

There are 2 of each stage in meiosis : 2 Interphase, 2 PMAT

What causes genetic variation in meiosis? - chromosomes lining up - crossing over of chromosomes - separation of chromosomes - chromosomes pulling apart

crossing over of chromosomes

A Drosophila fruit fly cell with 2N = 8 chromosomes—two of each kind—is called a (haploid, diploid) cell. One (allele, gene) of each (allele, gene) is located on each (heterologous, homozygous, heterozygous, homologous) chromosome. Drosophila fruit flies produce gametes with one of each kind of chromosome. These gametes are called (diploid, haploid) cells. These cells contain (1/2N, N, 2N, 4N) chromosomes.

diploid, allele, gene, homologous, haploid, N

What is one of the advantages to reproducing sexually versus asexually? - survival of the fittest - overproduction - genetic variation - cloning

genetic variation

Cells that have only one chromosome from each pair - meiosis - haploid - homologous - diploid

haploid

The chromosomes that pair up during meiosis, are called __________ chromosomes. - homozygous - asexual - homologous - genes

homologous

The pair of chromosomes that contain the same genes (but may be coded differently) and are inherited from a male and female parent are termed ___. - gametes - alleles - zygote - homologs

homologs

Meiosis in males differs than in females because: - there are less stages in females - females produce identical copies - of the 4 cells made, only 1 cell survives

of the 4 cells made, only 1 cell survives

The female sex cell is called - zygote - sperm - fertilization - ovum

ovum

Crossing over occurs in which phase ? - metaphase I - anaphaseII - telophaseII - prophase I

prophase I

The male sex cell is called - egg - zygote - sperm - mitosis

sperm

A fertilized egg is called - egg - lettuce - zygote - sperm

zygote