how are the normal number of chromosomes retained in the progeny
Answers
Answer:
by fertilisation 1 gene from mother(x,x) and 1 from father(x,y) get transformed into zygote
Answer:
Progeny will retain 46 chromosomes in total.
Explanation:
Offspring in genetics are termed as progeny, the inheritants.
1 set of chromosome is equal to 2 chromosomes. The first 22 sets of chromosomes are known as autosomes, which are shared by both the parents having 23 sets of chromosomes by themselves. The 23rd pair of chromosome is known as sex chromosome which decides the sex of the offspring.
From each male germinal cell, four spermatozoa are produced containing 23 chromosomes by each while from the female germinal cell, one ovum is produced having 23 chromosomes in total. And after fertilisation the zygote undergoes multiple mitotic (eqational division) and meiosis (reduction ) division in a controlled manner.