AP BIOLOGY

ANIMAL REPRODUCTION AND DEVELOPMENT

SEXUAL REPRODUCTION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
If the diploid number of chromosomes in carrots is 18, the haploid number is ____
A
18
B
9
C
27
D
36
Explanation: 

Detailed explanation-1: -The total number of chromosomes is referred to as the chromosome number. The haploid number in humans is given as 2n=46, n = 23, this is because the haploid human cells possess one set of 23 chromosomes – 22 sets of autosomal chromosomes (non-sex chromosomes) and 1 set of sex chromosomes.

Detailed explanation-2: -However, during the process of reproduction the haploid cells unite to form a diploid zygote. If any organism has a haploid of 24 chromosomes, the total number of chromosomes in its diploid stage will be 48 chromosomes ( 24x2) Was this answer helpful?

Detailed explanation-3: -The basic chromosome number of carrots is 9–11. Most cultivated carrots are diploid (2n = 2x = 18).

Detailed explanation-4: -The diploid number can be calculated by multiplying the haploid number by 2. The variable ‘N’ represents the number of chromosomes in the genome. Thus, the haploid number of chromosomes is equal to N. The diploid number of chromosomes is equal to 2N.

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