B13 - Reproduction

Question 1

what is sexual reproduction

Answer 1

fusion of male and female gametes

Question 2

what cell division is sexual reproduction

Answer 2

meiosis

Question 3

what cell division is asexual reproduction

Answer 3

mitosis

Question 4

what is male sex chromosome

Answer 4

XY

Question 5

what is female sex chromosome

Answer 5

XX

Question 6

male gamete in flowering plants

Answer 6

pollen

Question 7

female gamete in flowering plants

Answer 7

ovule

Question 8

genetic material in cells

Answer 8

deoxyribonucleic acid

Question 9

structure of DNA

Answer 9

two complementary strands forming a double helix

Question 10

what is a gene

Answer 10

small section of DNA that codes for a particular amino acid sequence to make a specific protein

Question 11

what are alleles

Answer 11

different forms of the same gene

Question 12

what is a recessive allele

Answer 12

allele that needs to be present twice to be expressed

Question 13

what is a dominant allele

Answer 13

allele that is always expressed, even if there is only one copy present

Question 14

what is a genome

Answer 14

the entire genetic material of an organism

Question 15

what type of allele causes polydactyly

Answer 15

dominant alleleh

Question 16

what type of allele causes cystic fibrosis

Answer 16

recessive allele

Question 17

how many chromosomes does the normal human bod have

Answer 17

23 pairs - 46

Question 18

why is studying the human genome important

Answer 18

• search for genes linked to certain diseases
• understanding and treatment of inherited disorders
• tracing past human migration