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What role do DNA and chromosomes play in heredity?
according to the chromosome theory of inheritance,genes are carried from parents to their offspring on chromosomes.
Can parents pick if they want a boy or a girl?
Unfortunately, no they cannot. It depends on the mother chromosomes (XX) and the father chromosomes(XY). The chromosomes from the father is basically the only chromosomes to detect the sex of the baby. Boy or Girl. If a mother's X chromosome meets with the fathers X chromosome, it will be a girl. If a mothers chromosome X meets with the father Y chromosome, it will be a boy.
How many chromosomes do the parents of a child with Down syndrome have?
The parents of a child who has Down syndrome each have the normal amount of chromosomes. The parents have 46, the child has 47.
Is the sex of the offspring determined by the female parents chromosomes?
No, the sex of the offspring is determined by the combination of chromosomes from both parents. In mammals, females have two X chromosomes (XX) while males have one X and one Y chromosome (XY). The sex of the offspring is determined by whether the father contributes an X or Y chromosome during fertilization.
What sex of offspring is determined by a chromosome pair?
The sex of offspring is determined by the combination of sex chromosomes inherited from the parents. In humans, females have two X chromosomes (XX) and males have one X and one Y chromosome (XY). The presence of a Y chromosome determines the development of male characteristics.
Where did you get your chromosome?
one of your parents each give a chromosome
Explain how the sex chromosomes determine the sex of the offspring?
The sex chromosomes inherited from the parents determine the sex of the offspring. Females have two X chromosomes (XX), while males have one X and one Y chromosome (XY). The presence of a Y chromosome results in the development of male characteristics, while the absence of a Y chromosome leads to the development of female characteristics.
In plants and animals an offspring inherits How Many genes?
The number of genes and number of chromosomes inherited depend on the species. The number of chromosomes a species has is known as the chromosome number. For example, (disregarding polyploidy or polysomy) a human baby has 46 chromosomes, but a horse has 64. Chromosomes usually occur as one of a pair in humans, and so they have 23 pairs of chromosomes. However, it is common in plants to have many sets of chromosomes and so they do not occur in pairs, but in triplets, or as sets of 4, 5 or 6 etc. Some species of strawberries have 7 of each chromosome. The number of genes depends on how long the chromosome is, and each chromosome in each different species will have a different number of genes on the chromosome.
What are male sex chromosomes and how do they determine the biological sex of an individual?
Male sex chromosomes are the X and Y chromosomes. The presence of a Y chromosome typically determines male biological sex, while the absence of a Y chromosome typically results in female biological sex. The combination of sex chromosomes inherited from parents determines an individual's biological sex.
How many chromosomes dose each parent pass to their offspring?
When a parent is going to have an offspring the offspring only gets half a chromosome from each parent, they combine to make one chromosome then that chromosome gets copied until there are 23 pairs of chromosome's. This is how you get your features.
Why do which best describes the sex chromosomes in humans?
Humans have 22 pairs of homologous non-sex chromosomes (called autosomes), and one pair of sex chromosomes, making a total of 46 chromosomes in a genetically normal human.Each member of a pair is inherited from one of the two parents. In addition to the 22 pairs of homologous autosomes, female humans have a homologous pair of sex chromosomes (two Xs), while males have an X and a Y chromosome.
What percent of a parents genes does an egg or sperm cell have?
Humans have 23 pairs of chromosomes. A pair is made up of one chromosome from the egg, and one chromosome from the sperm. That makes it 50-50%.
