1. How many different kins of offspring could result if one parent is pure dominant and the other is parent is pure recessive? How many different kinds of offspring could result if both parents are heterozygous?
2. Why does an individla usally carry only two genes for a certain trait?
3. Why do living organisms have an even number of chromosome in their body cells?
2006-12-13 10:14:36 · 1 answers · asked by .::Princess::. 1 in Science & Mathematics ➔ Biology
1.) You will get 100% heterozygous offspring from a pure dominant and a pure recessive parent. Now if both parents are heterozygous, there will be 25% dominant (RR), 25% recessive (rr), and 50% heterozygous (Rr).
3.) Living organisms have an even number of chromosomes, because their chromosomes are half of their parents. (For example, a human has 46 chromosomes. He gets 23 from his father and 23 from his mother, therefore he totals with 46, which is an even number. This process is done in all living creatures.)
2006-12-13 11:30:49 · answer #1 · answered by Lady Smooth 2 · 0⤊ 0⤋