Answer:
b. Restriction enzymes cutting DNA
Explanation:
Restriction enzymes are the enzymes that cut the DNA molecules. Their specific feature is that they digest the specific DNA sequences only. These specific DNA sequences are called restriction sites. When some restriction enzymes digest the DNA, DNA fragments with single-stranded ends are produced. These single-stranded overhangs are called sticky ends. They are called so since the DNA fragments produced by digesting DNA with one restriction enzyme have complementary overhangs that spontaneously base pair.
A human has 23 chromosome pairs (hence a total of 46 chromosomes). A gamete is haploid (n), hence has 23 total chromosomes. The number of combination of chromosomes that can make a gamete is calculated as follows; 2^23 = 8, 388, 608. This is without considering genetic recombination.
Answer:
It depends where. Include that and ill be able to tell you!
Explanation:
Answer 1: Option C, heterozygous dominant
Explanation: For example the genotypes of these true breeding white and purple flowers is pp and PP, respectively, then the offsprings would be all Pp. This is a heterozygous genotype and it will express dominant trait only.
Answer 2: Option C, homozygous recessive
Explanation: If the trait is recessive, then it will express only when both the alleles of the genotype are recessive alleles. And this would be homozygous state. For example, 'pp' would be the genotype for white flowers.
Answer 3: Option D, white and red
Explanation: If we want that all offsprings should be heterozygous, then parents should be true breeding, which means homozygous. Here, roan is a heterozygous trait [WR]. So both parents should be homozygous, like RR and WW. Then only all offsprings would be heterozygous.
