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There are a total of 46 of these in most human cells, & genes within them contain all our hereditary information |
chromosomes
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$400 |
DJ |
WE'RE BLINDING YOU WITH SCIENCE |
2026-03-13 |
#40 |
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It's a structure made of DNA found in the cell nucleus; the hermit crab has 254, we have 46 |
chromosomes
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$400 |
DJ |
SCIENCE FACTS |
2025-04-21 |
#9316 |
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Thomas Hunt Morgandiscovered that genes are carried on these structures |
chromosomes
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$1,200 |
DJ |
SCIENCE TEST |
2024-12-31 |
#9237 |
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These rod-shaped structures in a cell's nucleus carry its genetic information |
chromosomes
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$400 |
DJ |
SCIENCE GLOSSARY |
2021-01-20 |
#8318 |
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These were first seen in human cells in 1882; the exact number, 46, was determined in 1956 |
chromosomes
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$600 |
J |
SCIENCE |
2008-11-12 |
#5563 |
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Geneticists know that human beings typically have 23 pairs of these; fruit flies have only 4 pairs |
chromosomes
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$800 |
DJ |
SCIENCE CLASS |
2006-04-26 |
#4988 |
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These DNA-bearing structures have caps called telomeres; learn to lengthen those & we'll all live forever |
chromosomes
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$1,200 |
DJ |
SCIENCE NEWS |
2006-01-05 |
#4909 |
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As they become visible when stained, they were named this from the Greek for "color" & "body" |
chromosomes
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FJ |
LIFE SCIENCE |
2002-02-11 |
#4021 |
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While we have 23 pairs of these in each cell, the fruit fly makes do with 4, only 1 of them sex-related |
chromosomes
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$200 |
DJ |
SCIENCE |
2001-05-08 |
#3852 |
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These gene-carrying structures are distinguished by haploid & diploid numbers |
Chromosomes
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$300 |
J |
SCIENCE CLASS |
2001-04-11 |
#3833 |
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This threadlike structure found in cells is made up largely of proteins & DNA |
chromosomes
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$300 |
J |
SCIENCE CLASS |
1998-09-17 |
#3224 |
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Human beings normally have 46 of these in most of their cells |
Chromosomes
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$200 |
J |
SCIENCE |
1997-06-19 |
#2964 |
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They're the tiny threadlike structures that carry the genes - you have 23 pairs |
Chromosomes
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$600 |
DJ |
SCIENCE |
1996-07-17 |
#2753 |
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Haploid refers to a cell with one set of these, diploid to a cell with two sets |
chromosomes
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$400 |
DJ |
SCIENCE |
1996-06-27 |
#2739 |
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A zygote has the full or diploid number of these |
chromosomes
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$600 |
DJ |
GENERAL SCIENCE |
1994-12-05 |
#2361 |
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From fruit fly experiments, Thomas Hunt Morgan proved that genes are located on these units |
chromosomes
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$600 |
DJ |
SCIENCE |
1994-01-07 |
#2155 |
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Before prophase, the first stage of mitosis, the number of these doubles |
chromosomes
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$300 |
J |
GENERAL SCIENCE |
1993-03-02 |
#1962 |
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During cell reproduction, one of these splits into 2 identical strands called chromatids |
chromosomes
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$400 |
DJ |
SCIENCE |
1992-05-01 |
#1780 |
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Your body has 23 pairs of these, & if you're a girl, one pair is XX |
chromosomes
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$200 |
DJ |
SCIENCE |
1990-02-05 |
#1256 |
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A diploid cell's nucleus has these aligned in pairs |
chromosomes
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$800 |
DJ |
SCIENCE |
1988-04-20 |
#848 |