Concept 4

Question 1

X and Y are called

Answer 1

Sex chromosomes

Question 2

Determines the sex of the baby

Answer 2

Sex determina

Question 3

Two sets of chromosomes

Answer 3

Diploid cell

Question 4

Single sets of chromosomes

Answer 4

Haploid cells

Question 5

Consist of two identical sister chromatids

Answer 5

Diploid cell

Question 6

For human diploid number is

Answer 6

(2n= 46)

Question 7

What number of pair of chromosomes is the sex determina or sex chromosomes

Answer 7

23rd pair of chromosomes

Question 8

In a cell in which DNA synthesis has occurred each chromosomes is?

Answer 8

Replicated

Question 9

The 46 chromosomes in human somatic cell are?

Answer 9

Two sets of 23 chromosomes; one for the mother and one for the father

Question 10

What gender if XX?

Answer 10

Girl

Question 11

What gender if XY?

Answer 11

Boy

Question 12

What gender if YY

Answer 12

Boy

Question 13

Contains a single set of chromosomes and is haploid

Answer 13

Gametes ( sperm or egg)

Question 14

Gametes is produced by?

Answer 14

Meiosis

Question 15

Union of gametes( sperm and egg)

Answer 15

Fertilization

Question 16

Fertilized egg and one set of chromosomes each parent cell

Answer 16

Zygote

Question 17

At sexual maturity, the ovaries and testes produce?

Answer 17

Haploid gametes

Question 18

How can fertilization and meiosis can help in sexual life cycle ?

Answer 18

They alternate in Sexual life cycle to maintain the chromosomes number

Question 19

Each chromosomes are replicated

Answer 19

DNA synthesis

Question 20

For humans diploid is?

Answer 20

46

Question 21

For human haploid is

Answer 21

23

Question 22

Produces somatic cells by mitosis and develops into an adult

Answer 22

Zygote

Question 23

The only human cells produced by Meiosis

Answer 23

Gametes