Question

1}→if a normal human cell has 46 chromosomes, how many chromosomes will be there in a human (a) sperm cell , and (b) zygote ?? 2}→ what size of plants are produce if both parents have genes Tt.?​

Answer 1

Answer:

chalo pagli itne dino baad aye hain to ek question ka answer to banta hai...

Explanation:

(a) if a normal human cell has 46 chromosomes that means no genetic problem okay fine..

you might be knowing that there are 2 types of cells..

one is somatic cells and the other is germ cells.. Sperms and eggs constitute the germ cells..

so, a human sperm cell would constitute the half no. of chromosomes that is 46/2=23 nd the other 23 chromosomes will be from the mother's side okay fine..so we are done with the first part..

(b) now listen carefully to what i have to say; zygote means the fertilised egg (formed as a result of reproduction); as a result of fusion of sperm and ova (which we call ejaculation) ,so it will definitely contain a diploid set of chromosomes ( that is 46 chromosomes)...

(c) if both parents have genes Tt then the offspring which is produced will be the tall type..(phenotypically)..

suno ek aur baat batadun tumko ki humans mein 22 pairs of chromosomes normal fumctioning ke liye hote hain jinhe hum kehte hain autosomes aur last pair jo hota hai voh sirf sex chromosome hain to 44+2=46 okay..

aur haploid , diploid iska matlab hota hai pair of chromosomes ...

haploid- single set of chromosomes

diploid- double set of chromosomes

triploid- triple set of chromosomes like this way..

hope this helps you..

be happy..

keep smiling...

keep raising questions..

Bohot khubsurat lag rahi ho..

tumhara paglu..:)