Genetics revi

Question 1

what is the function of dna and where is it found

Answer 1

DNA codes for proteins and it is found in the nucleus of a cell

Question 2

What is a nucleotide. What three parts comrpsie a nucleotide

Answer 2

Nucleotide is a subunit of Dna that consists of one phosphate , one sugar and one nitrogenious base

Question 3

what are the bases

Answer 3

adenine thymine guanine cytosine

Question 4

what is a gene

Answer 4

segement of dna that encodes for a trait eg hair color blood typ e

Question 5

how is dna arranged

Answer 5

in chromsomes

Question 6

rank the following structures from most complex to least complex

Answer 6

chromoxomes, gene, molecule of dna

Question 7

how many chromsomes are there in a human body cell

Answer 7

46

Question 8

how many chromsomes in a sex cell

Answer 8

23

Question 9

what cells are haploids and what cells r diploids

Answer 9

haploids are sex cells and diploids are body cells.

Question 10

what sex chromsomes do males have and females

Answer 10

males have x and y
females have x and x

Question 11

give the term used to name the first 22 pairs of chrosmomes

Answer 11

autosomes

Question 12

what does a karyotype show ? WHy are karyotypes useful

Answer 12

Karyotypes is an image that orders chromosomes from largest to smallest. karyotypes are useful as it shows whether you have any abnormalities in ur genetics or capture any inherited diseases

Question 13

what base is present in rna but not dna

Answer 13

Uracil is present in rna but not dna. And thymine is present in dna but now rna

Question 14

another difference bwetween rna and dna

Answer 14

rna is single stranded
it contains sugar ribose instead of deoxyribose