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In the simplest of terms, no two letters in a gamete can be the same letter of the alphabet. If the genotype of an individual is Ww, the gametes will either contain a W or a w but not both.
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| Genotype related to Phenotype | ||
|---|---|---|
| Genotype | Genotype | Phenotype |
| ww | Homozygous Recessive | Straight hairline |
- What is WW genotype?
- What are the possible gametes of TT?
- How do you determine how many gametes are possible in a cross?
- Is WW dominant or recessive?
- Is Widow's Peak dominant or recessive?
- What are types of gametes?
- What are gametes example?
- What are the possible gametes produced by the RR F1 individual?
- What are the four possible gametes after independent assortment?
- How do you cross gametes?
- How many different gamete combinations are there?
- How many genotypes are possible with 3 alleles?
What is WW genotype?
An individual with a (WW) or (Ww) genotype will have a V-shaped peak at the hairline. Only ww individuals will have a straight hairline. To determine the probability of inheritance of a widow's peak (or any other dominant trait), the genotypes of the parents must be considered.
What are the possible gametes of TT?
The parent with the genotype Tt has two different alleles, and half of its gametes will have the T allele, and half will have the t allele. So in regard to the Tt genotype, the parent organism will produce two different types of gametes, T and t .
How do you determine how many gametes are possible in a cross?
Simply place a 2 above each heterozygous gene pair and a one above each homozygous gene pair. Then multiply the numbers together to obtain the total number of different possible gametes.
Is WW dominant or recessive?
The genotypes WW and Ww will produce a widow's peak (the dominant phenotype) and the ww genotype will produce no widow's peak (the recessive phenotype). If we know the genotype of the parents, we can predict the possible genotypes and phenotypes in their offspring (first generation).
Is Widow's Peak dominant or recessive?
For example, the allele for widow's peak is dominant and the allele for straight hairline is recessive.
What are types of gametes?
In certain organisms, like humans, there are two morphologically distinct types of gametes: (1) the male gamete (i.e. sperm cell) and (2) the female gamete (i.e. ovum).
What are gametes example?
In short a gamete is an egg cell (female gamete) or a sperm (male gamete). ... This is an example of anisogamy or heterogamy, the condition in which females and males produce gametes of different sizes (this is the case in humans; the human ovum has approximately 100,000 times the volume of a single human sperm cell).
What are the possible gametes produced by the RR F1 individual?
The F1 individuals can produce 4 different types of gametes: TG, Tg, tG, tg. The possible phenotypes would be tall and green, tall and yellow, dwarf and green and dwarf and yellow in a 9:3:3:1 ratio.
What are the four possible gametes after independent assortment?
Thus, there are four equally likely gametes that can be formed when the YyRr heterozygote is self-crossed as follows: YR, Yr, yR, and yr.
How do you cross gametes?
All you have to do is give one allele to half the gametes, and the other allele to the other half of the gametes (remember gametes are haploid, so they get only 1 of each gene or letter!). Then cross out any duplicates.
How many different gamete combinations are there?
There are 8,324,608 possible combinations of 23 chromosome pairs. As a result, two gametes virtually never have exactly the same combination of chromosomes. Each chromosome contains dozens to thousands of different genes.
How many genotypes are possible with 3 alleles?
Genotype is also used to refer to the pair of alleles present at a single locus. With alleles 'A' and 'a' there are three possible genotypes AA, Aa and aa. With three alleles 1, 2, 3 there are six possible genotypes: 11, 12, 13, 22, 23, 33.
