inheritance variation and evoloution

Question 1

gametes required for asexual and sexual reproduction

Answer 1

asexual - 1
sexual - 2

Question 2

types of cell division involved in asexual and sexual reproduction

Answer 2

asexual - mitosis
sexual - meiosis

Question 3

does asexual and sexual have genetic variation

Answer 3

only sexual reproduction has genetic variation

Question 4

what is cloning

Answer 4

a clone is genetically identical offspring produced by asexual reproduction

Question 5

advantages and disadvantage of asexual reproduction

Answer 5

pro - energy efficient, quick, many offsprings, no need to find mate
cons - lack of genetic variation so fewer adaptations

Question 6

advantages and disadvantage of sexual reproduction

Answer 6

pros - genetic variation can lead to natural selection
cons - slower, takes time and energy, need to find mate

Question 7

what is a chromosome

Answer 7

thread like structure holding genes

Question 8

what is DNA

Answer 8

the chemical which chromosomes are made from

Question 9

what is a gene

Answer 9

a small packet of information controlling a characteristic or making a certain protein

Question 10

what is meiosis

Answer 10

• type of cell division that produces gametes
• human gamete contain 23 chromosomes which are haploid cells
• body cell contains 46 chromosomes which are diploid cells arranged in 23 pairs
• so in meiosis the number of chromosomes get reduced or halved
• it produces four genetically different haploid cells