Biology1

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25 cards·by ahobbs

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Which normal cells are most likely to be affected by chemotherapy?

hair follicles, mother cells of red and white blood cells, cells lining intestine and stomach

Allele

version of a gene

Somatic cell

non-sex cell

How many chromosomes are in human somatic cells?

46 chromosomes

Density-dependence inhibition

loss of contact inhibition

How many pairs of chromosomes in human somatic cells?

23 pairs

Male sex chromosomes

X & Y

Zygote

fertilized egg

Gamete

sex cell

How many chromosomes are in a human gamete cell?

one set of chromosomes (2 chromo)

Are abnormal numbers of sex chromosomes usually fatal?

Usually not fatal

What is a homologous pair of chromosomes?

two alleles of the same gene

Autosome

all other chromosomes not X & Y

Haploid cell

one set of chromosomes

Diploid cell

two set of chromosomes

Genetically, what causes down syndrome?

Caused by extra copy of chromosome 21

Three types of cancer treatments

Surgical removal, radiation, chemotherapy

Female sex chromosome

X & X

How do some chemotherapy drugs treat cancer?

drugs disrupt specific steps in cell cycle

Linked genes

genes on same chromosome

Sex chromosome

contain characters related to individuals sex and others

Do most cells have a "programmed" life?

most cells programmed to certain number of divisions

Which type of cell is a gamete?

haploid cell

How does the chromosome arrangement in metaphase of mitosis compare to metaphase 1 in meiosis?

Metaphase- chromosomes align along the equator and Metaphase 1- homologous align as pairs

Why are cancer cells more sensitive to radiation than normal cells?

damages DNA