An individual with the genotype Aa can make two types of gametes: A and a. Since this is a random process, the individual will, on average, make equal numbers of each gamete.
How many gametes can aa form?
Hints For Biology 101 Exam #4
|No. of homologous chromosome pairs (heterozygous genes)||No. of different gametes from each parent|
|1 (Aa X Aa)||2 (21)|
|2 (AaBb X AaBb)||4 (22)|
|3 (AaBbCc X AaBbCc)||8 (23)|
|4 (AaBbCcDd X AaBbCcDd)||16 (24)|
What type of gamete will be produced?
The reproductive cells (gametes) are an exception; they have only half as many chromosomes as the body…… , the gametes, ova and sperm—are transmitted to offspring and are responsible for inherited diseases….…
Which gametes can the Aa Bb parent generate?
There are four possible combinations of gametes for the AaBb parent. Half of the gametes get a dominant A and a dominant B allele; the other half of the gametes get a recessive a and a recessive b allele. Both parents produce 25% each of AB, Ab, aB, and ab.
What type of gametes will be formed by genotype RrYy?
A plant with genotype RrYy, produce four types of gametes during fertilization. They are RY, Ry, rY, ry. So, the correct option is ‘four’.
How many different kinds of gametes will be produced by a plant having the genotype Aa Bb Cc?
Explanation: A plant having genotype AABbCC will produce only two types of gametes, ABC and AbC.
How many gametes can be produced?
The number of different possible gametes produced by the diploid genotype (AaBbCcDdEe) is 2 x 2 x 2 x 2 x 2 = 32 (2 for each pair of heterozygous genes).
How many gametes are produced in meiosis?
Meiosis is a type of cell division that reduces the number of chromosomes in the parent cell by half and produces four gamete cells. This process is required to produce egg and sperm cells for sexual reproduction.
What is the probability that an AA individual will produce a gamete with an A allele?
The only way to get an aa individual is if the mother contributes an a gamete and the father contributes an a gamete. Each parent has a 1 / 2 1/2 1/2 chance of making an a gamete.
How are gametes formed in angiosperms?
Like those of mosses and ferns, angiosperm gametes are produced by the gametophyte generation. Angiosperm gametophytes are associated with flowers. The gametes they produce join to form the sporophyte. … The pollen-producing stamens are initiated in the third whorl of the flower.
Do gametes have organelles?
WEBSITE. Each sperm consists of a haploid nucleus, a propulsion system to move the nucleus, and a sac of enzymes that enable the nucleus to enter the egg. Most of the sperm’s cytoplasm is eliminated during maturation, leaving only certain organelles that are modified for spermatic function (Figure 7.2).
Are gametes cells?
Gametes are an organism’s reproductive cells. They are also referred to as sex cells. Female gametes are called ova or egg cells, and male gametes are called sperm. Gametes are haploid cells, and each cell carries only one copy of each chromosome.
How many gametes can a homozygous produce?
Here, the given genotype consists of two heterogeneous alleles Bb, and Cc while one homozygous allele is AA. So, it results in the production of 22= 4 types of gametes.
Is RR heterozygous or homozygous?
The (RR) genotype is homozygous dominant and the (rr) genotype is homozygous recessive for seed shape. In the image above, a monohybrid cross is performed between plants that are heterozygous for round seed shape.
What are homozygous dominant genotype?
An organism with two dominant alleles for a trait is said to have a homozygous dominant genotype. Using the eye color example, this genotype is written BB. An organism with one dominant allele and one recessive allele is said to have a heterozygous genotype.